Answer: The correct answer is "D. may be "playing it safe" because of concern about the Robinson-Patman Act.".
Explanation: A large producer who offers no discounts and the same prices to all customers in the U.S.: may be "playing it safe" because of concern about the Robinson-Patman Act.
This law prohibits anti-competitive practices of producers, especially price discrimination. It was developed from practices in which store chains could buy products at lower prices than other retailers.