Task: Question Answering
Input (English): Problem: in a bus left side are 15 seats available , 3 few seats in right side because in rear exit door . each seat hold 3 people . in addition , there is a seat back can sit 9 people all together . how many people can sit in a bus ? 
Options: a ) 52 , b ) 49 , c ) 95 , d ) 90 , e ) 66
Output (English): d