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Read the passage carefully and answer the question given below: Utrecht, the fourth largest city in the Netherlands, is a cyclist's dream. Unlike other; urban areas that confine riders to tiny lenes, cyclists here get priority with dedicated "bicycle streets" where cars are considered 'guests' as well as special bike tunnels and bridges. The city is also in the process of constructing the world's biggest indoor parking lot for bikes at its central train station, However, the over 60 per cent residents who use the two-wheelers as their primary mode of transportation are still frustrated because, like cyclists all over the world, they have to make constant stops at traffic lights. To ease their pain, Jan-Paul De Beer, head of local design firm springlab, has come up with an ingenious solution—electronic kiosks that help riders sync up their speed with the onset of a green light, the tall blue structures, called Flo, are strategically placed about 120 meters (393 feet) before a traffic signal. They capture the ridar's speed using a radar and let him/her know whether to slow down, pedal harder, or maintain the same pace. Flo's first prototype featured LED lights that would light up in sequence to show the ideal speed. However, this turned out to be dangerous since riders began focusing more on the lights than on the road ahead. But since people seemed to enjoy the idea of "outsmarting the traffic signals." the designers decided to incorporate a fun gaming experience in the next version. When a fast rider zips past a Flo kiosk, it will signal him to show down by displaying a tortoise. Conversely, a slow cyclist will be encouraged to pick up the pace by a here, while Aose cursing along at the perfect speed will be rewarded with thoumbs up sign! Whenever possible, Flo aslo also communicates with the | traffic lights to turn them green allowing the cyclist to bereeze through. In cases where the red light is inevitable, Flo will flash the image of a cow, letting the rider know that he/she has (choice but to wait it out. De Beer says, "We chose animals because a and a turtle are universal symbols for high speed and slow pace. A cow, however, is a new symbol, because we couldn't find a playful, widely known symbol for waiting. We chose a cow because when you go on holiday to France, which every Dutchman does, often find yourself waiting for cows blocking the road."

What is the main function of the Flo?

A) Lets the rider know whether to slow down, pedal harder only

B) Lets the rider know if he/she has to maintain the same pace only

C) Flo captures the rider's speed using a rader only

D) All of the above