Task: Question Answering
Input (English): Problem: the ratio of three numbers is 3 : 4 : 7 and their product is 18144 . the numbers are 
Options: a ) 9 , 12,21 , b ) 15 , 20,25 , c ) 18 , 24,42 , d ) 24 , 15,17 , e ) 30 , 12,7
Output (English): c