This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Microbiology
A patient presents with following findings. what will be the media used to diagnose this condition? 
Select and explain. 
A. Loffler's serum slope, B. Lowenstein Johnson, C. Karry Blair, D. Chocolate agar
A: Loffler's serum slope
Answer: A: Loffler's serum slope 
Explanation: The image shows grey membrane on the tonsil extending to anterior pillar that is suggestive ofdiphtherial infection. Loeffler's serum slope: Enriched medium frequently used for the growth ofC. diphtheriae. Bacteria produce a luxuriant growth in 6-8 hours at 37degC. Does not suppo the growth of streptococci pneumococci.