Task: Question Answering
Input (English): Problem: a retailer sold an appliance for $ 100 . if the retailer ' s gross profit on the appliance was 25 percent of the retailer ' s cost for the appliance , how many dollars was the retailer ' s gross profit ? 
Options: a ) $ 10 , b ) $ 16 , c ) $ 20 , d ) $ 24 , e ) $ 25
Output (English): c