Teacher:In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Teacher: Now, understand the problem? Solve this instance: Problem: 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 ?
Options: a ) 15 , b ) 30 , c ) 120 , d ) 240 , e ) 256
Student:
c