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': 'Substance commonly used for organ/tissue preservation for histopathological examination is? \nSelect and explain. \nA. Ethyl alcohol, B. Formalin, C. Saturated salt solution, D. Normal saline', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) FormalinREF: Parikh 6th edition page 2.62Repeat in December 2009"10% formalin is used as a preservative for tissue meant for histopathological examination"', 'role': 'assistant'}]