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: Forensic Medicine
An arrested person on request the magistrate for a medical examination of his body by a registered medical practitioner as per the following provision in the code criminal procedure: 
Select and explain. 
A. Section 53, B. Section 54, C. Section 56, D. Section 57
A: Section 53
Answer: A: Section 53 
Explanation: A i.e. 53