Meg and Bob are
among the 5 participants in a cycling race.
If each participant finishes the race and no two participants finish at
the same time, in how many different possible orders can the participants
finish the race so that Meg finishes ahead of Bob?<--[if !supportLists]-->
A. 24
B. 30
C. 60
D. 90
E. 120
the answer is C,why?
