Which of the Following Statements Is Correct

Which of the following statements is correct?

A) For unfamiliar products, consumers are more likely to rely on an external reference price.
B) For familiar products, consumers are more likely to rely on an internal reference price.
C) Both a and b.
D) Neither a nor b.
E) Odd-even pricing is pricing a product at a moderate level and positioning it next to a more expensive model.