On a single line track, 10 goods trains loaded with iron ore run from A to B and empty wagons return from B to A daily. Amount of creep of the rails will be

On a single line track, 10 goods trains loaded with iron ore run from

1.	On a single line track, 10 goods trains loaded with iron ore run from A to B and empty wagons return from B to A daily. Amount of creep of the rails will be
A.	zero
B.	more in the direction a to b
C.	more in the direction b to a
D.	none of these
Answer» C. more in the direction b to a