This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
[{'content': 'Which of the following is not used for routine faecal culture \nSelect and explain. \nA. DCA, B. MacConkey, C. Tellurite blood agar, D. Blood agar', 'role': 'user'}, {'content': "Answer: C \nExplanation: Hoyle's agar is a selective medium that uses tellurite to differentially select Corynebacterium diphtheriae from other upper respiratory tract flora. The medium appears cream to yellow colored, and takes the form of a free-floating powder. Ref ananthnarayana and panikers microbiology textbook 8/e", 'role': 'assistant'}]