Tammy owns a candle shop in downtown Evanston. Amy, a frequent customer, purchased a scented candle for $15. The following day, Tammy sold the same scented candle to her friend, Beth, for $18. Amy discovered this price discrepancy and asked Tammy about it. Tammy told Amy that she charged her a lower price because she was a frequent customer of the candle shop. Additionally, Tammy told Amy that she determined Beth was more willing to pay the higher price. This scenario is an example of ________blank that is covered under the Clayton Act.

A. price discrimination

B. price fixing

C. competitive pricing

D exclusionary pricing