Task: Question Answering
Input (English): Problem: a student appeared in the mock cat . the test paper contained 3 sections namely qa , di and va . the percentage marks in all va was equal to the average of percentage marks in all the 3 sections . coincidentally , if we reverse the digit of the percentage marks of qa we get the percentage marks of di . the percentage marks in va scored by student could be : 
Options: a ) 81 , b ) 48 , c ) 66 , d ) 69 , e ) none of these
Output (English): c