Task: Question Answering
Input (English): Problem: if 45 % of a class averages 95 % on a test , 50 % of the class averages 78 % on the test , and the remainder of the class averages 60 % on the test , what is the overall class average ? ( round final answer to the nearest percent ) . 
Options: a ) 83 % , b ) 84 % , c ) 85 % , d ) 86 % , e ) 87 %
Output (English): c