This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
A road traffic accident patient presents with breathlessness. Differentiation between cardiac tamponade and tension pneumothorax is best done by? 
Select and explain. 
A. Pulse pressure, B. Pulse volume, C. JVP, D. Breathing sounds
D: Breathing sounds
Answer: D: Breathing sounds 
Explanation: Ans. (d) Breath soundsRef. B&L page 354/ 26th Edition* Both Tension pneumothorax and Cardiac tamponade both present with breathlessness, tachypnea and distended neck veins* Tension pneumothorax features - Hyper resonance over the chest and absent breath sounds.* Cardiac tamponade - Classically, the presentation consists of venous pressure elevation, decline in arterial pressure with tachycardia, and muffled heart sounds.