This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Venous return (VR) is given by formula - \nSelect and explain. \nA. VR = (RVR - RAP)/ MFSP, B. VR = (MFSP - RVR)/RAP, C. VR = (MFSP - RAP)/RVR, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. VR = (MSFP-RAP)/RVR', 'role': 'assistant'}]