You have decided that you want to attend a costume party as Black Panther. You estimate that it will cost $40 to assemble your costume. After spending $40 on the costume, you realize that the additional pieces you need will cost you $25 more. The marginal cost of completing the costume is

A) $15.
B) $25.
C) $40.
D) $65.

Marginal Cost

The cost of producing one additional unit of a good or service, which can change depending on the level of production.

Costume Party

A social gathering where participants wear costumes and often engage in themed activities, not a term typically associated with economics.

Black Panther

A member of the Black Panther Party, a revolutionary black nationalist and socialist organization active in the United States from 1966 until 1982.