If 1 mg of lorazepam produces the same anxiolytic response as 10 mg of diazepam, which is correct?
A. Lorazepam is more potent than is diazepam.
B. Lorazepam is more efficacious than is diazepam.
C. Lorazepam is a full agonist, and diazepam is a partial agonist.
D. Lorazepam is a better drug to take for anxiety than is diazepam.