At the Consumer's Optimum

Multiple Choice

At the consumer's optimum

A) the budget constraint will have a slope of MU_x/P_x.
B) it is still possible for the consumer to increase his consumption of both goods.
C) the indifference curve will intersect the budget constraint at the midpoint of the budget constraint.
D) the slope of the indifference curve is equal to the slope of the budget constraint.