Task: Question Answering
Input (English): Problem: in a caravan , in addition to 50 hens there are 45 goats and 8 camels with some keepers . if the total number of feet be 224 more than the number of heads , find the number of keepers . 
Options: a ) 25 , b ) 20 , c ) 15 , d ) 13 , e ) 14
Output (English): c