This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular System, Subject name: Physiology
[{'content': 'A decrease in which of the following tends to increase pulse pressure? \nSelect and explain. \nA. Systolic pressure, B. Stroke volume, C. Aerial compliance, D. Venous return', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Type of BP Major determinant Systolic BP (SBP) SV (directly propoional) Compliance of aoa (inversely propoional) Diastolic BP (DBP) Elastic recoli of aoa / major vessels (directly propoional) Total peripheral resistance (directly propoional) Pulse pressure (PP) = SBP-DBP Ratio of stroke volume to compliance of the aerial tree Mean aerial pressure (MAP) = (SBP +2* DBP)/3 = DBP +(PP/3) Cardiac output x Total peripheral resistance', 'role': 'assistant'}]