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: Protein kinase A (PKA): 
 Options:  <1> It induces the synthesis of glycogen in response to an increase in glucagon in the blood. <2> It is a membrane protein that is activated in response to an increase in circulating GTP. <3> It is activated through the cAMP produced in response to an increase in adrenaline in the circulation. <4> It inhibits the lipolysis of triacylglycerides accumulated in adipose tissue, in response to an increase in intracellular cAMP. <5> It is a monomeric protein that inhibits the synthesis of ATP and muscle contraction.
Example Output: 3

Example Input: Question: Indicate, which of the compounds listed below, has a higher acidity: 
 Options:  <1> Acetic acid. <2> Hydrogen bromide <3> Sulfuric acid. <4> Carbonic acid. <5> Nitric acid.
Example Output: 2

Example Input: Question: Which of the following characteristics of the genetic code is NOT CORRECT ?: 
 Options:  <1> The sequence of nitrogenous bases of a given gene has a fixed reading frame and no punctuation marks. <2> It is degenerate, because for many amino acids there is more than one codon that encodes it. <3> The degeneration of the genetic code supposes an adaptive mechanism that reduces the harmful effects of the mutations. <4> It is totally universal, allowing the heterologous expression of human proteins (eg insulin) in prokaryotic organisms such as E. coli. <5> Its reading is always done from the 5'-phosphate end towards the hydroxyl of the messenger RNA (mRNA).
Example Output:
4