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
Positive schick's test indicates that the person is - 
Select and explain. 
A. Immune to diphtheria, B. Hypersensitive to diphtheria, C. Susceptible to diphtheria, D. Susceptible and hypersensitive to diphtheria
C: Susceptible to diphtheria
Answer: C: Susceptible to diphtheria 
Explanation: None