Task: Question Answering
Input (English): Problem: at a certain bowling alley , it costs $ 0.50 to rent bowling shoes for the day and $ 2 to bowl 1 game . if a person has $ 12.80 and must rent shoes , what is the greatest number of complete games that person can bowl in one day ? 
Options: a ) 7 , b ) 8 , c ) 6 , d ) 10 , e ) 11
Output (English): c