Cups of Coffee Are Sold at the Skool Café in Three

Cups of coffee are sold at the Skool Café in three sizes (S,M,L) ,and customers fall into three categories (academics,administrators,students) .The numbers of cups sold in a working day are as follows. Small Medium Large
Academics 12 25 27
Administrators 19 26 4
Students 30 10 11
Selecting one cup sold at random,the probability that it will be a large cup is?

A) .256
B) .333
C) .500
D) .111