Task: Question Answering
Input (English): Problem: a , b , c , d , e , f are the only 6 families in indira nagar . a , b , c , d , e and f has 7 , 8 , 10 , 13 , 6 , and 10 member in their families respectively . if 1 member from all the 6 families left their respective families to accommodate themselves in the hostel of iim lucknow , then the average number of member now in each family of indira nagar is 
Options: a ) 8 , b ) 9 , c ) 10 , d ) 13 , e ) 15
Output (English): a