Task: Question Answering
Input (English): Problem: at a certain university , 70 % of the professors are women , and 70 % of the professors are tenured . if 90 % of the professors are women , tenured , or both , then what percent of the men are tenured ? 
Options: a ) 25 , b ) 37.5 , c ) 50 , d ) 62.5 , e ) 75
Output (English): c