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'.

Ex Input:
Question: In the respiratory chain: 
 Options:  <1> Ferrosulfurized proteins contain heme groups. <2> The heme groups are in carotenoids. <3> Cytochromes contain iron and sulfur groups. <4> Ubiquinones transport protons and electrons. <5> All transporters carry two electrons.

Ex Output:
4


Ex Input:
Question: Diabetes mellitus type MODY (maturityonset diabetes of the young) is characterized by all the following EXCEPT: 
 Options:  <1> It is an autosomal dominant disorder. <2> It is characterized by a genetic defect in the function of beta cells of the pancreas. <3> Share the same HLA risk as Diabetes Mellitus type 1. <4> The patients have a slight fasting hyperglycemia. <5> They may need treatment with insulin for their control.

Ex Output:
3


Ex Input:
Question: The Grignard reagents attack the epoxides to give, after the appropriate hydrolysis: 
 Options:  <1> Carboxylic acids. <2> Cyclic amides. <3> Open aliphatic chains. <4> Open-chain alcohols. <5> Cyclic ethers.

Ex Output:

4