This Application addresses the economic concept of

A decrease in the expected future price of cars

A) increases the current quantity demanded of cars, that is, there is a movement downward along the demand curve for cars. B) increases the current demand for cars, that is, there is a rightward shift of the demand curve for cars. C) decreases the current quantity demanded of cars, that is, there is a movement upward along the demand curve for cars. D) decreases the current demand for cars, that is, there is a leftward shift of the demand curve for cars.

You are studying with a friend, and your friend says "To maximize utility, a consumer must consume the combination of goods so that the marginal utility of good X equals the marginal utility of good Y

" Explain whether your friend's statement is correct or incorrect.