In a log dose-response plot, drug efficacy is determined by the maximal height of the measured response on the effect axis, whereas drug potency is determined by
A.
the number of animals exhibiting an all-or-none response.
B.
the signal transduction pathway.
C.
the formula, including the affinity of the drug and the number of drug receptors.
D.
the position of the curve along the log-dose axis.