The Figure Given Below Shows the Revenue and Cost Curves

Multiple Choice

The figure given below shows the revenue and cost curves of a monopolistically competitive firm.Figure 12.4
MR: Marginal revenue curve
ATC: Average total cost curve
MC: Marginal cost curve
-Advertising, brand names, packaging, and celebrity endorsements all occur in monopolistically competitive markets because:

A) significant barriers to entry exist in the real world.
B) in the real world, there are very few markets with many firms.
C) that gives the producer some command over the price of their products.
D) product differentiation seldom occurs in the real world.
E) monopolistically competitive firms have an incentive to spend as much money as possible compared to their rivals.