Which of the Following Statements Is True of the Good-Faith

Which of the following statements is true of the good-faith meeting-of-competition defense as permitted by the Robinson-Patman amendment?

A) It applies to a situation when sellers select their own customers in good faith and not in restraint of trade.
B) It applies to a situation when there are price differentials based on differences in the cost of manufacture, sale, or delivery of commodities.
C) It applies to a situation that involves the setting up of barriers to market entry around a product, brand, product line, market, or market segment.
D) It applies to a situation when a seller in good faith meets the equally low price of a competitor.
E) It applies to a situation when price changes are made in response to changing conditions such as sales in good faith in discontinuance of business in the goods concerned.