John increases his consumption of Good X and Good Y when his income increases. For John
A) Good X and Good Y are substitute goods.
B) Good X and Good Y are complement goods.
C) Good X is an inferior good.
D) Good X and Y are normal goods

Question

Quizplus · Accepted Answer

Since John increases his consumption of both Good X and Good Y when his income increases, it implies that both goods are superior or normal goods. Therefore, the best choice is D.

John Increases His Consumption of Good X and Good Y