A term newborn presents with frothing, excessive drooling of saliva, coughing of saliva. There was history of polyhydramnios in antenatal period. There is difficulty in passing a  nasogastric tube. What is the probable diagnosis?
Tracheo-esophageal fistula :

Newborn presents with frothing, excessive salivation.
Associated with polyhydramnios in antenatal period.
Nasogastric tube is inserted and inability to pass it confirms the diagnosis of TEF.
Diaphragmatic hernia
Choanal atresia
Gastroschisis
Tracheo-esophageal fistula