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
Not true about Montoux test 
Select and explain. 
A. PPD RT-23 with tween 80 used as strain, B. Result is seen after 3 weeks, C. > 9mm induration is taken as positive, D. Type IV Hypersensitivity
B: Result is seen after 3 weeks
Answer: B: Result is seen after 3 weeks 
Explanation: None