About the pharmacology of drug effect in the above figure, which of the following is incorrect?
A. B has higher potency than C
B. B has lower efficacy than C
C. When a competitive antagonist is added to drug A, its effect becomes like C.
D. When a non-competitive antagonist is added to drug A, its effect becomes like D.
Answer: D
When a non-competitive antagonist is added to drug A, its effect becomes like B