Task: Question Answering
Input (English): Problem: 3 years ago , the ratio of ages of p and q was 4 : 3 . 6 years from now , the ratio of their ages will be 7 : 6 . what is p ' s age at present ? 
Options: a ) 9 , b ) 12 , c ) 15 , d ) 18 , e ) 21
Output (English): c