Which of the Following Statements Is Incorrect

Multiple Choice

Which of the following statements is incorrect?

A) To be efficient, a competitive equilibrium must allocate goods to consumers so that no reallocation of the goods could make all consumers better off.
B) To be efficient, a competitive equilibrium must allocate inputs among firms so that no reallocation of inputs would result in a higher output of all goods.
C) To be efficient, a competitive equilibrium must satisfy substitution efficiency.
D) To be efficient, a competitive equilibrium must satisfy output efficiency.