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
In determining blood pressure by auscultatory method 
Select and explain. 
A. The loudest sound is the diastolic pressure, B. Systolic pressure estimation tends to be lower than those made by palpatory method, C. The first sound heard is the systolic pressure, D. The sounds that are heard are generated in heart
C: The first sound heard is the systolic pressure
Answer: C: The first sound heard is the systolic pressure 
Explanation: None