Task: Question Answering
Input (English): Problem: 4 mat - weavers can weave 4 mats in 4 days . at the same rate , how many mats would be woven by 8 mat - weavers in 8 days ? 
Options: a ) 4 , b ) 16 , c ) 8 , d ) 1 , e ) 2
Output (English): b