Which Statement Is True

Multiple Choice

Which statement is true?

A) For efficiency to be achieved in the production of a public good everyone should be taxed an amount equal to the value they place on the last unit of the good provided times the quantity of public good provided.
B) The price theory we studied always considers efficient output to be the place where marginal cost equals marginal benefit, even if the good is a pure public good.
C) A pure private good can never be jointly consumed.
D) All of these are true.