If the Marginal Cost of Adding a New Line of Products

Multiple Choice

If the marginal cost of adding a new line of products is $10 million, then Amazon should add the product

A) if marginal costs fall.
B) if marginal benefits fall.
C) if marginal benefits are less than $10 million.
D) if marginal benefits are more than $10 million.
E) if Amazon does not operate at a loss.