All economies must decide what to produce. Which of the following says the same thing, but does so more completely?
Select one of the options below as your answer: 
A. All economies must decide how to help firms to maximize their profits. 
B. All economies should be fair to all people.
C. All economies seek to make their rich people even richer.
D. All economies must determine how to allocate their scarce resources

Can someone explain this one for me