Task: Question Answering
Input (English): Problem: a baker makes chocolate cookies and peanut cookies . his recipes allow him to make chocolate cookie in batches of 7 and peanut cookies in batches of 6 . if he makes exactly 99 cookies , what is the minimum number of chocolate chip cookies he makes ? 
Options: a ) 7 , b ) 14 , c ) 21 , d ) 28 , e ) 35
Output (English): c