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
which of the following drug can worsen angina: 
Select and explain. 
A. Thyroxine., B. Dipyridamole., C. Sumatriptan., D. All of the above.
D: All of the above.
Answer: D: All of the above. 
Explanation: Dipyridamole results in coronary steal phenomenon.Thyroxine cause tachycardia. Sumatriptan cause coronary vasoconstriciton. Hence all these drugs worsen the angina