Refer to the above graphs. The long-run equilibrium for a monopolistically competitive firm is represented by graph:

In which of the following categories would an agreement to trade currencies in pre-set amounts at a certain date in the future be included?

a. an option b. a futures contract c. a forward contract d. a swap

Which of the following statements is true about profit?

A) Profit refers to the revenue received from the sale of a quantity of goods. B) The terms "accounting profit" and "economic profit" can be used interchangeably. C) Profit is calculated by multiplying price and quantity sold. D) Profit is the difference between revenue and cost.