A girl jumps down from a moving bus, along the direction of motion of the bus, tilting slightly forward. She falls on (a) a sheet of ice (b) a patch of glue.

A

In case (a) she falls backward and in case (b) she falls forward

B

In both cases (a) and (b) she falls forward

C

In both cases (a) and (b) she falls backward

D

In case (a) she falls forward and in case (b) she falls backward