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 come with fever, cold, cough, membrane over tonsils; nasal swab is taken, culture should be done on which medium for earliest diagnosis - 
Select and explain. 
A. Loffler's serum slop, B. LJ. media, C. MC Conkey's Agar, D. Citrate media
A: Loffler's serum slop
Answer: A: Loffler's serum slop 
Explanation: None