A car runs at constant speed on a circular track of radius 10m. taking 6.28s on each lap. The average speed and average velocity on each complete lap is:-
A. Velocity `10ms^(-1)`, speed `10ms^(-1)`
B. Velocity zero, speed `10ms^(-1)`
C. Velocity zero, speed zero
D. Velocity `10ms^(-1)` speed zero
