In the short run, which are most important in determining changes in output?

A) marginal costs and marginal revenue.
B) total costs and total revenue.
C) average costs and total revenue.
D) fixed costs.

Marginal Revenue

The additional income earned by selling one more unit of a good or service, crucial for determining optimal output levels.

Total Costs

The sum of all expenses associated with the production and delivery of goods or services, encompassing both fixed and variable costs.