Task: Question Answering
Input (English): Problem: a group of boy scouts and girls scouts is going on a rafting trip . 45 % of the scouts arrived with signed permission slips . if 60 % of the scouts were boy scouts and 25 % of the boy scouts arrived with signed permission slips , then what percentage of the scouts were girl scouts who arrived with signed permission slips ? 
Options: a ) 20 , b ) 21 , c ) 25 , d ) 28 , e ) 30
Output (English): e