Driver a Is Cruising Along Enjoying the Fall Colors

Multiple Choice

Driver A is cruising along enjoying the fall colors.Driver B starts her car at the instant he passes her.Their velocities are shown as functions of time in the graph below.At what instants in time on the graph are drivers A and B side by side?

A) 0 s,2 s
B) 0 s,4 s
C) 2 s,4 s
D) 2 s,6 s
E) 4 s,6 s