How long does it take to travel 250 kilometers at 25 km/hour ? What is asked in this problem ?

A. The Average speed it took to travel 250 kilometers at 25 km/hr.
B. The total distance it took to travel 250 kilometers at 25 km/hr.
C. The time it will take to travel 250 kilometers at 25 km/hr.
D. The velocity it took to travel 250 kilometers at 25 km/hr. ​