The Expression "There's No Such Thing as a Free Lunch

Multiple Choice

The expression "there's no such thing as a free lunch" means that:

A) services may be free, but goods are never free.
B) even if a good or service has a price of zero, it has a cost.
C) charitable organizations should not serve free lunches to the poor.
D) poor people are really the ones who pay for their allegedly free lunches.
E) someone has to pay the market price for a good or service.