Answer:
a) Declines initially as output increases and rises with further increases in output
Step-by-step explanation:
Marginal cost can be defined as the additional or extra cost that is being incurred by a company as a result of the production of an additional unit of a product or service.
Generally, marginal cost can be calculated by dividing the change in production costs by the change in level of output or quantity.
On a related note, marginal cost curve is the change in total cost (TC) divided by a change in quantity of output.
The marginal cost curve declines initially as output of a business firm increases and rises with further increases in output.