Task: Question Answering
Input (English): Problem: the population of a town increases 10 % and 20 % respectively in two consecutive years . after the growth the present population of the town is 1320 . then what is the population of the town 2 years ago ? 
Options: a ) 1100 , b ) 1001 , c ) 1010 , d ) 1000 , e ) 1002
Output (English): d