Task: Question Answering
Input (English): Problem: there are 250 men and 150 women in a committee , if all will work they will complete 12 units per day , if all men work they will complete 15 units per day , how many units will women complete per day ? 
Options: a ) 2 , b ) 3 , c ) 4 , d ) 5 , e ) 7
Output (English): b