This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CHF, Angina Pectoris and Myocardial Infarction, Subject name: Pharmacology
A drug lacking vasodilatory propeies that is effective in angina is: 
Select and explain. 
A. Isosorbide dinitrate (IDN), B. Metoprolol, C. Nifedipine, D. Verapamil
B: Metoprolol
Answer: B: Metoprolol 
Explanation: Beta blockers act in angina by decreasing exercise induced myocardial work by reducing HR. These do not cause vasodilation. Nitrates (IDN) and CCBs (Nifedipine, Verapamil) act by causing vasodilation.