In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Example input: Question: A 13-year-old girl is operated on due to Hirschsprung illness at 3 months of age. Which of the following tumors is more likely to be present?
Options: <1> Abdominal neuroblastoma <2> Wilms tumor <3> Mesoblastic nephroma <4> Familial thyroid medullary carcinoma.
Example output: 2
Example explanation: The answer to the given question should be a tumor, therefore Wilms tumor is the correct answer for the given question.
Q: Question: The black indicator of Eriochrome T (N.E.T.) has the following colors depending on the pH:
Options: <1> H2Inrojo, HIn2- blue, In3- orange and when complexed with metal it is red. <2> H2Inazul, HIn2- red, In3- orange and when complexed with metal it is red. <3> H2Inrojo, HIn2- blue, In3- red wine and when complexed with metal it is orange. <4> H2In-red, HIn2- orange, In3- blue and when complexed with metal it is orange. <5> H2Inazul, HIn2- orange, In3- red and when complexed with metal is orange.
A:
1