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: Social & Preventive Medicine
Which of the following is not administered by intradermal route? 
Select and explain. 
A. BCG, B. Drug sensitivity injection, C. Mantoux, D. Insulin
D: Insulin
Answer: D: Insulin 
Explanation: Insulin is given through sub-cutaneous route