This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'Endolymph resembles \nSelect and explain. \nA. CSF, B. ICF, C. ECF, D. Plasma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: PerilymphEndolymphBony labyrinthMembranous labyrinthFormed from CSFSecreted by stria vascularisResembles ECFResembles ICFNa+ richK+ richReabsorbed into subarachnoid spaceReabsorbed into endolymphatic sacRef: Hazarika; 3rd ed; Pg 24', 'role': 'assistant'}]