Alvin, Bingyi and Cheska play a two-player game that never ends in a tie. In a recent tournament between the three players, a total of 60 games were played and each pair of players played the same number of games.
\quad\bullet When Alvin and Bingyi played, Alvin won 20 \% of the games.
\quad\bullet When Bingyi and Cheska played, Bingyi won 60 \% of the games.
\quad\bullet When Cheska and Alvin played, Cheska won 40 \% of the games.
How many games did Bingyi win?
Answer Choices
A. 12
B. 24
C. 28
D. 30
E. 36