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
A child presents with a white patch over the tonsils; diagnosis is best made by culture in: 
Select and explain. 
A. Loeffler medium, B. LJ medium, C. Blood agar, D. Tellurite medium
A: Loeffler medium
Answer: A: Loeffler medium 
Explanation: In the child presenting with a white patch over the tonsil, we suspect a diagnosis of 'diphtheria'. Usual media used for cultivation of Diphtheria are Loeffler's serum slope & tellurite blood agar. Ref: Text Book of Microbilogy By Ananthanarayan, 6th Edition, Page 215 and 8th Edition, Page 233