If the average center to center spacing of vehicles is 20 meters, then the basic capacity of a traffic lane at a speed of 50 kmph is?

If the average center to center spacing of vehicles is 20 meters, then

1.	If the average center to center spacing of vehicles is 20 meters, then the basic capacity of a traffic lane at a speed of 50 kmph is?
A.	2500 vehicles per day
B.	2000 vehicles per hour
C.	2500 vehicles per hour
D.	1000 vehicles per hour
Answer» D. 1000 vehicles per hour