Task: Question Answering
Input (English): Problem: the overall ages of kumar , hathim and rahul is 93 years . 1 decade ago , the ratio of their ages was 2 : 3 : 4 . what is the current age of rahul ? 
Options: a ) 38 , b ) 37 , c ) 34 , d ) 35 , e ) 33
Output (English): a