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
Blood pressure is defined as the product of 
Select and explain. 
A. Systolic pressure x pulse, B. Diastolic pressure x pulse rate, C. Pulse pressure x pulse rate, D. Cardiac output x peripheral resistance
D: Cardiac output x peripheral resistance
Answer: D: Cardiac output x peripheral resistance 
Explanation: Blood pressure = Cardiac output  x Total peripheral resistance