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: Physiology
The contractile element in a skeletal muscle is present in: 
Select and explain. 
A. Sarcolemma, B. Sarcoplasm, C. Myofibril, D. Endomysium
C: Myofibril
Answer: C: Myofibril 
Explanation: None