Task: Question Answering
Input (English): Problem: the number of stamps that kaye and alberto had were in the ration of 5 : 3 respectively . after kaye gave alberto 15 of her stamps , the ration of the number of kaye had to the number of alberto had was 4 : 3 . as a result of the gift , kaye had how many more stamps than alberto ? 
Options: a ) 20 , b ) 30 , c ) 70 , d ) 60 , e ) 90
Output (English): c