The Substitution Effect of a Price Change Is Depicted by

The substitution effect of a price change is depicted by

A) a movement along the budget constraint holding satisfaction constant.
B) a shift in the budget constraint at the old prices.
C) a movement along the consumer's new indifference curve at the new prices.
D) a movement along the original indifference curve to the point where the marginal rate of substitution equals the price ratio for the new set of prices.