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: Medicine
Serum creative kinase-3 (CK-3) is elevated in - 
Select and explain. 
A. Muscular dystrophy, B. Myocardial infarction, C. Alcoholic cirrhosis, D. Brain tumours
A: Muscular dystrophy
Answer: A: Muscular dystrophy 
Explanation: None