This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Histo Pathology, Subject name: Pathology
[{'content': 'Blood smear is best seen at pH of: \nSelect and explain. \nA. 7.2, B. 6.8, C. 6.6, D. 7', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) 6.8(Ref: Dacie 11 th/pg 59)*A pH of 6.8 is usually recommended for seeing blood smears*When looking for malaria parasites, a pH of 7.2 is recommended to see Schuffner's dots.", 'role': 'assistant'}]