Task: Question Answering
Input (English): Problem: there are 1200 jelly beans divided between two jars , jar x and jar y . if there are 400 fewer jelly beans in jar x than 3 times the number of beans in jar y , how many beans are in jar x ? 
Options: a ) 650 , b ) 700 , c ) 750 , d ) 800 , e ) 850
Output (English): d