When Indifference Curves Are Bowed in Toward the Origin

Multiple Choice

When indifference curves are bowed in toward the origin,

A) consumers are less inclined to trade away goods they are lacking.
B) consumers' willingness to trade away goods they have in abundance diminishes.
C) an increase in income will shift the indifference curve away from the origin.
D) a decrease in income will shift the indifference curve toward the origin.