Task: Question Answering
Input (English): Problem: the price of 3 pants and 6 t - shirts is rs . 750 . with the same money one can buy 1 pant and 12 t - shirts . if one wants to buy 8 t - shirts , how much shall she have to pay ? 
Options: a ) 150 , b ) 250 , c ) 400 , d ) 450 , e ) 550
Output (English): c