Which of the Following Is True of Product Positioning

Which of the following is true of product positioning?

A) Consumers cannot position products with or without the help of marketers.
B) Consumers generally reevaluate products every time they make a buying decision.
C) To simplify the buying process, consumers are likely to position products in their minds.
D) A product's position is defined by the number of competitors in a market.
E) Product positioning has little influence on the design of marketing mixes.