Task: Question Answering
Input (English): Problem: jeff has 252 ounces of peanut butter in 16 , 28 . and 40 ounce jars . he has an equal number of each sized jar . how many jars of peanut butter does jeff have ? 
Options: a ) 9 , b ) 8 , c ) 7 , d ) 10 , e ) 11
Output (English): a