Choose the correct answer from the given multiple choices.
a. Identify the equilibrium condition of a firm under perfect competition.
1. AC=MR, & AC cuts MR from above.
2. MC=MR, & AC cuts MR from below.
3. AC=MR, & MC cuts MR from below.
4. MC=MR, &MC cuts MR from above.
5. MC=MR, & MC cuts MR from below.
b. The demand for the product of a firm is perfectly elastic in one of the following markets. Identify the market.
1. monopoly
2. monopolistic competition
3. perfect competition
4. monopsony
5. oligopoly