Luther waited 50 minutes in line to buy tickets to a play. While waiting, Luther played his video game for 12 minutes and read a book for 25 minutes. The rest of the time, Luther talked to his best friend Chuck. How much time did Luther spend talking to Chuck?
A. 38 minutes
B. 25 minutes
C. 37 minutes
D. 13 minutes
50 - 12 - 25
= 38 - 25
= ?