Task: Question Answering
Input (English): Problem: the sum of the numbers is 177 . if the ratio between the first and the second be 5 : 3 and that between the second and third be 4 : 9 , then find the second number ? 
Options: a ) 12 , b ) 20 , c ) 45 , d ) 60 , e ) 52
Output (English): c