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
The antianginal effect of propranolol may be attributed to which of the following ? 
Select and explain. 
A. Block of exercise induced tachycardia, B. Dilation of constricted coronary vessels, C. Increased cardiac force, D. Increased resting heart rate
A: Block of exercise induced tachycardia
Answer: A: Block of exercise induced tachycardia 
Explanation: None