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
Diphtheria carrier are diagnosed by 
Select and explain. 
A. Gram’s staining, B. Throat culture, C. Albert’s staining, D. Schick test
B: Throat culture
Answer: B: Throat culture 
Explanation: None