​Suppose a Particle Is Moving Along a Straight Line with a Speed

Multiple Choice

​Suppose a particle is moving along a straight line with a speed v for a time t,then stops for a time t,and then resumes moving along the original direction with speed v for time t.What has been the average speed of the particle for the total time period 3t?

A) v
B) 2 v / 3
C) 1.5v
D)