Task: Question Answering
Input (English): Problem: the compound ratio of 1 : 2 , 2 : 5 and 3 : 10 ? 
Options: a ) 1 : 2 , b ) 1 : 5 , c ) 3 : 5 , d ) 1 : 50 , e ) 3 : 50
Output (English): e