There are 16 teams in a tournament. If during the first round, each team plays every other team exactly once, how many games will be played in the first round?	Choose the correct choice from the following options:
A) 15	B) 30	C) 120	D) 240	E) 256

Rationale: number of ways to pick 2 teams from a total of 16 = 16 c 2 = 16 ! / 14 ! * 2 ! = 120 . hence c .
Answer: C