The average variable cost, the average total cost, and the marginal cost start to diminish only after the firm reaches the point of efficient scale

Which of the following statements regarding price elasticity of supply and the length of time for adjustment is FALSE?

A) The longer is the time period for adjustment, the greater is the price elasticity of supply. B) The longer is the time period for adjustment, the less is the extent to which resources flow into (or out of) an industry through expansion (or contraction) of existing firms. C) The longer is the time period for adjustment, the greater is the extent to which entry or (exit) of firms increases or (decreases) production in an industry. D) The shorter the time period for adjustment, the greater is the price elasticity of supply.

There are only two people in the world (Adam and Eve) and only one good (apples). Adam has four apples and a total utility in money terms from apple consumption of $16; Eve has four apples and a total utility from apple consumption of $20. Which of the following statements must be true?

A. Eve’s marginal utility from consuming her fourth apple must be greater than Adam’s marginal utility from consuming his fourth apple. B. The total utility of society will rise if Adam gives Eve one apple. C. If Adam and Eve each always has a positive marginal utility from consuming apples, the total utility of society can only be increased by an increase in the total number of apples available for consumption. D. Adam’s average utility from consuming apples is greater than Eve’s average utility from consuming apples.