The Slope of an Indifference Curve Is

Multiple Choice

The slope of an indifference curve is:

A) the sum of a consumer's demand curves for the goods they purchase.
B) derived from the supply curves of two different goods.
C) the measure of the goods' relative marginal utilities, or of the substitution terms on which the consumer would be willing to exchange a little less of one good in return for a little more of the other.
D) the same for all consumers.
E) none of the above.