Task: Question Answering
Input (English): Problem: the youngest of 4 children has siblings who are 3 , 6 , and 7 years older than she is . if the average ( arithmetic mean ) age of the 4 siblings is 30 , what is the age of the youngest sibling ? 
Options: a ) 22 , b ) 23 , c ) 24 , d ) 25 , e ) 26
Output (English): e