Match the definition to the proper term.
a. clear payments to the factors of production used
b. less-clear costs, such as the opportunity costs of using the firm's own resources without receiving any explicit compensation for those resources
c. a firm's total revenue from sales of output minus firm's explicit costs
d. the total revenue minus explicit and implicit costs

a.
a-implicit costs, b-explicit costs, c-economic profit, d-accounting profit

b.
a-economic profit, b-accounting profit, c-implicit costs, d-explicit costs

c.
a-explicit costs, b-implicit costs, c-accounting profit, d-economic profit

d.
a-accounting profit, b-economic profit, c-explicit costs, d-implicit costs