Does anybody know the answer to this?

The Chess Club president brought donuts to the club meeting each week. As the club grew, more donuts were needed so each member could have a donut. The table below shows the ratios of boxed donuts to the cost.

Donuts 2 4 B 8

Cost A 31.60 39.50 C

Determine which table has the correct values for A, B, and C.