Task: Question Answering
Input (English): Problem: in an election between two candidates , one got 55 % of the total valid votes , 20 % of the votes were invalid . if the total number of votes was 4000 , the number of valid votes that the other candidate got , was : 
Options: a ) 3500 , b ) 1200 , c ) 1650 , d ) 3700 , e ) 1800
Output (English): e