This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Propanolol is useful for all of the following except ? 
Select and explain. 
A. Angina, B. Familial tremor, C. Hypeension, D. Paial AV block
D: Paial AV block
Answer: D: Paial AV block 
Explanation: Ans. is 'd' i.e., Paial AV block