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
A subpoena is a kind of - 
Select and explain. 
A. Decomposed body tissue, B. Designation, C. Document, D. Court tribunal
C: Document
Answer: C: Document 
Explanation: Summon (subpoena) is a legal document compelling attendance of a witness in a court of law.