Demands differ from wants because

A) demands are unlimited, whereas wants are limited by income.
B) wants require a plan to acquire a good but demands require no such plan.
C) wants imply a decision about which demands to satisfy, while demands involve no specific plan to acquire the good.
D) demands reflect a decision about which wants to satisfy and a plan to buy the good, while wants are unlimited and involve no specific plan to acquire the good.

D