Which One of the Following Statements Is False

Multiple Choice

Which one of the following statements is false?

A) Indifference curves are negatively sloped.
B) A preference map consists of a series of indifference curves.
C) Indifference curves are bowed out from the origin.
D) The marginal rate of substitution is the magnitude of the slope of an indifference curve.
E) The marginal rate of substitution increases as a consumer moves up along an indifference curve for ordinary goods.