Anastasia went shopping for birthday gifts and bought three of the same board games. She also spent $9.75 on birthday cards. Anastasia spent a total of $69.60. Which equation can be used to determine b , the price of each board game?
A. b+(3b+9.75)=69.6
B. (3+9.75)b=69.6
C. 3b+9.75=69.6
D. 69.6−9.75=b