Positive shick’s test indicates that person is :: (A) Immune to diphtheria, (B) Hypersensitive to diptheria, (C) Susceptible to diptheria, (D) Carrier of diphtheria
Answer is C. Shick’s test

Intradermal test which provide information regarding :

a. Immune status, b. Hypersensitivity & susceptibility to diptheria toxin before giving active immunization.

 In one arm toxin is injected (test arm) and in other arm heat inactivated toxin is injected (control arm).