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
CSF rhinorrhea is diagnosed by: MP 07 
Select and explain. 
A. Glucose estimation, B. Halo sign, C. Immunoelectrophoresis, D. All
D: All
Answer: D: All 
Explanation: Ans. All