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
Drug which enhances spos performance - 
Select and explain. 
A. Erythropoiten, B. Propranolol, C. Clabeterol, D. Aspirin
A: Erythropoiten
Answer: A: Erythropoiten 
Explanation: Ans. is 'a' i.e., Erythropoietin Exercise capacity is improved by erythropoietin.