If a bicycle starts accelerating uniformly from rest (at t = , it ... ...

 If a bicycle starts accelerating uniformly from rest (at t = 0), it attains a certain velocity v after a time t. How fast would it be going after a time 3t (that is, a time 3t after the start t = 0)?
(A) v + 9
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 02. The Language of Motion