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
[{'content': 'Thayer Martin is a selective medium for \nSelect and explain. \nA. Neisseria gonorrhoeae, B. Streptococcus pyogenes, C. Streptococcus agalactiae, D. Streptococcus pneumoniae', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Thayer Martin medium is the selective medium for Neisseria gonorrhoeae.\nThere are no specific selective media for Streptococcus pyogenes, Streptococcus agalactiae and Streptococcus pneumoniae.\nAll these three organisms are fastidious and are therefore usually cultured on blood agar/ chocolate agar.', 'role': 'assistant'}]