This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Pharmacology, Subject name: Pharmacology
What is prodrug 
Select and explain. 
A. Inactive drugs convert into active metabolites, B. Active drugs converts into inactive metabolite, C. Measure of the amount of drug necessary to produce an effect of a given magnitude, D. Bind to a receptor and elicit a biologic response
A: Inactive drugs convert into active metabolites
Answer: A: Inactive drugs convert into active metabolites 
Explanation: A. i.e. (Inactive drug convert into active metabolites) (23- 24- KDT 6th)Few drugs are inactive as such and need conversion in the body to one or more active metabolites. Such a drug is called PRODRUGAdvantages1. More stable2. Better bioavailability3. Less side effects and toxicityPOTENCY - a measure of the amount of drug necessary to produce an effect of a given magnitude* EC50 is the concentration of the drug that produce a response equal to 50% of the maximal response* The potency of the drug can be compared using EC50, the smaller the EC50, the more potent the drug