When Indifference Curves Are Bowed Inward Toward the Origin

Multiple Choice

When indifference curves are bowed inward toward the origin:

A) people are less inclined to trade away goods that they have an abundance of
B) people can only increase satisfaction by consuming more of all commodities
C) it is unlikely that consumers will be willing to engage in trade
D) the marginal rate of substitution decreases as a consumer moves down an indifference curve