Task: Question Answering
Input (English): Question: Infant of 1 month of life who goes to the hospital emergency department referred by his pediatrician for jaundice. He has been referring for 10 days and has been increasing. In the blood test, a total bilirubin of 7 mg / dl stands out, with indirect bilirubin being 1.5 mg / dl. The most likely cause, among the following, of this jaundice is: 
 Options:  <1> Biliary tract atresia <2> Jaundice due to breastfeeding. <3> Isoimmunization 0-A late onset. <4> Gilbert's disease. <5> Hereditary spherocytosis.
Output (English): 1