Task: Question Answering
Input (English): Question: In the most frequent type of esophageal atresia: 
 Options:  <1> Prenatal ultrasound performed in the third trimester allows diagnosis in 6080% of cases. <2> It is associated in 50% of cases with microgastria and neural tube defects. <3> The distance between the proximal and distal atresic pockets is greater than in the other types of atresia. <4> Gastrostomy should be performed in the first 48 hours of life to allow enteral feeding. <5> The presence of air in the stomach and small intestine on abdominal radiography confirms the existence of a distal fistula.
Output (English): 5