According to consumer choice theory, which of the statements below must be true?

• A rational consumer'schoices will yield indifference curves that cross each other on a preference map.
• When given the opportunity, a rational consumer will always prefer the bundle ofgoods that will give him the greatest utility maximization.
• A rational consumer will alwaysprefer a bundle that offers fewer of one of the goods, keeping the amount of the other good constant.
• It is possible that a rational consumer cannot come to a decision after considering all possible combinations.