The Marginal Rate of Substitution

Multiple Choice

The marginal rate of substitution

A) is the amount of good Y substituted for good X as a consumer moves along his budget line.
B) is the rate at which a person gives up the good measured on the y-axis to get an additional unit of the good measured on the x-axis while remaining on the same indifference curve.
C) increases as a consumer moves along her indifference curve and consumes more of the good measured on the x-axis.
D) is greater than the magnitude of the slope of the budget line.
E) is equal to the slope of the budget line.