Wheel of diameter 7cm and 14 cm start rolling simultaneously from X and Y which are 1980cm apart towards each other in opposite directions. Both of them make same number of revolutions per second. If both of them meet after 10s, the speed of the smaller wheel is:

A.

22 cm/s

B.

44 cm/s

C.

66 cm/s

D.

88 cm/s