The Current in a Wire Varies with Time According to the Relation

Multiple Choice

The current in a wire varies with time according to the relation where I is in amperes and t is in seconds.The number of coulombs that pass a cross section of the wire in the time interval between t = 0 and t = 1/20 s is

A) 2 $\pi$
B) 4 $\pi$
C) 40 $\pi$
D) 4
E) zero