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: Microbiology
Schick test in diphtheria is done to know: 
Select and explain. 
A. Carriers, B. Subseceptibles, C. Diseased, D. Immunized
B: Subseceptibles
Answer: B: Subseceptibles 
Explanation: Subseceptibles