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: Medicine
A patient presents with respiratory distress, hypotension and dilated bulging neck veins after chest trauma, most likely cause is- 
Select and explain. 
A. Hemothorax, B. Tension Pneumothorax, C. Cardiac tamponade, D. Flail chest
B: Tension Pneumothorax
Answer: B: Tension Pneumothorax 
Explanation: None