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Which of the following sentence is not an example of future perfect tense?

A)  Rohan will have whitewashed the house before being able to arrange a worker.

B)  In 2014, he will have been here for fifteen years.

C)  The Boeing 737 will have taken off before you reach the airport.

D)  Abraham will have been hacking off the dead shoots and twigs of the plants since morning.

E)  None of these