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
Culture mediam for corynebacterium diphtheria? 
Select and explain. 
A. Loefflers serum slope, B. McConkey, C. Saburauds agar, D. Lowenstein Jensen medium
A: Loefflers serum slope
Answer: A: Loefflers serum slope 
Explanation: Ans. is 'a' i.e., Loefflers serum slope