当业务量变动时，单位固定成本将（）。

A.成反比例变化

B.成正比例变化

C.固定不变

D.降低

Which of the following statements about forward and future contracts is FALSE（）

A. A future requires the contract purchaser to receive delivery of the good at a specified time.

B. The future value of a financial derivative depends on the value of its underlying asset.

C. The primary difference between forwards and futures is that only futures are considered financial derivatives.