4 weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 6 weavers in 6 days? Choose the correct choice from the following choices.
A) 6 B) 9 C) 12 D) 15 E) 18
1 weaver can weave 1 mat in 4 days.   6 weavers can weave 6 mats in 4 days.   6 weavers can weave 9 mats in 6 days.   The answer is 9.
<result>B</result>
4 weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 6 weavers in 6 days?