Drug A and Drug B both suppress appetite to the same extent, but Drug A has an ED50 of 115 mg/kg whereas Drug B has an ED50 of 50 mg/kg. We can conclude, therefore, that
a. Drug A is more potent than Drug B.
b. Drug A is more effective than Drug B.
c. Drug A is less potent than Drug B.
d. Drug A is less effective than Drug B.
e. these drugs are not directly comparable because of their different ED50 values.
Answer: C
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