An elderly patient has BP 170/60 mmHg.
What explains the wide pulse pressure?
A. Increased arterial compliance
B. Decreased stroke volume
C. Increased arterial stiffness
D. Decreased cardiac output
Answer: C. Increased arterial stiffness
Explanation: Aging → stiff arteries → ↑ systolic, ↓ diastolic
→ wide pulse pressure.