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
Which of the following is/ are the cause/s of unilateral elevation of hemidiaphragm? 
Select and explain. 
A. Pulmonary hypoplasia, B. Subphrenic infection, C. Phrenic nerve palsy, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Answer- D. All the abovePosture - Lateral decubitus position (dependent side)Gaseous distension of stomach or colonDorsal scoliosisPulmonary hypoplasiaPulmonary collapsePhrenic nerve palsyEventrationPneumonia or pleurisyPulmonary thromboembolismRib fracture and other painful conditionsSubphrenic infectionSubphrenic mass