Final answer:
B. Discriminatory prices or services
The Robinson-Patman Act deals with discriminatory prices or services among competing firms.
Step-by-step explanation:
The Robinson-Patman Act, which was passed in 1936, deals with discriminatory prices or services among competing firms.
This act prohibits firms from charging different prices to different customers for the same product, unless it can be justified by differences in costs or other legitimate factors. The aim of the Robinson-Patman Act is to ensure fair competition and prevent larger firms from gaining unfair advantages over smaller competitors.
For example, if a big retail chain is given a lower price for a product than a smaller local store, it would be considered discriminatory pricing and a violation of the Robinson-Patman Act.