Task: Question Answering
Input (English): Problem: in an intercollegiate competition that lasted for 3 days , 157 students took part on day 1 , 111 on day 2 and 98 on day 3 . if 89 took part on day 1 and day 2 and 56 took part on day 2 and day 3 and 32 took part on all three days , how many students took part only on day 1 ? 
Options: a ) 40 , b ) 44 , c ) 35 , d ) 49 , e ) 38
Output (English): b