0
A) always in one direction
B) always in both direction
C) in both direction, but one at a time
D) All of the above
E) None of the above
Correct Answer: A
Please Wait you are being redirected....
You need to login to perform this action.You will be redirected in 3 sec
OTP has been sent to your mobile number and is valid for one hour
Your mobile number is verified.