Answer the question on the basis of the following cost data: $$\begin{array}{ccc}& & \text{ Total }\\ \text{ Output }& & \text{ Cost }\\ 0& & \$24\\ 1& & 33\\ 2& & 41\\ 3& & 48\\ 4& & 54\\ 5& & 61\\ 6& & 69\end{array}$$ Refer to the data.The marginal cost of producing the sixth unit of output is:

A) $24.
B) $12.
C) $16.
D) $8.

Marginal Cost

The additional expense associated with creating another unit of a product or service.

Total Cost

The aggregate expenditure related to the manufacturing of products or services, which includes both stable and changeable costs.