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: Radiology
A new born baby with acute respiratory distress on day 1. X Ray chest PA view showed neumerous gas luscencies in entire left hemithorax, most likely diagnosis is 
Select and explain. 
A. Congenital lobar Emphysema, B. Pneumatocoel hernia, C. Congenital diaphragmatic hernia, D. Congenital lung cyst
C: Congenital diaphragmatic hernia
Answer: C: Congenital diaphragmatic hernia 
Explanation: C i.e. Congenital diaphragmatic hernia Left sided & whole lung involvementQ points towards diagnosis of Congenital diaphragmatic hernia, Cong. cystic .adenomatoid malformation (CCAM) and Congenital lobar emphysema all can present with multicystic Contralateral mediastinal shift & respiratory distress.