This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: ENT
[{'content': 'A membrane in the throat is caused by all except \nSelect and explain. \nA. Streptococcus, B. Staphylococci, C. Borrelia, D. Cornyebacteria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hemolytic streptococcus is the most common infecting organismDifferential Diagnosis of Membrane on Tonsili. Membranous tonsillitisii. Leukemiaiii. Diphtheriaiv. Aphthous ulcerv. Vincent&;s anginavi. Malignancy of tonsilRef: Hazarika; 3rd ed; Pg 479', 'role': 'assistant'}]