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 ) 12 , b ) 14 , c ) 16 , d ) 18 , e ) 20
Output (English): c