If there are external costs of production not accounted for, then marginal

A) cost equals marginal social cost.
B) cost is less than marginal social cost.
C) cost is greater than marginal social cost.
D) social cost is zero.

Marginal Social Cost

The additional cost imposed on society as a whole by producing one more unit of a good or service.

External Costs

External costs are expenses that are not borne by the individuals or organizations responsible but rather by society as a whole, often involving negative environmental impacts.