Refer to the figure below. What are the monopolist's profits?

The values 200 and 400 lie on the horizontal quantity axis, and the values 10, 20, and 30 lie on the vertical price axis. A pair of straight lines labeled M R and D start from a value 30 on the vertical axis, and pass through the points (200, 10), and (200, 20) and (400, 10), respectively. A horizontal line M C equals A C intersects the curve at the points (200, 10) and (400, 10).

Multiple Choice

• $1,000
• $3,000
• $4,000