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 biosensor consists of: 
 Options:  <1> A receiver, a transducer, and an enzymatic brand. <2> A receptor and an enzymatic brand. <3> A transducer and an enzymatic brand. <4> A receiver and a transducer. <5> A receptor and an antibody.
Example Output: 4

Example Input: Question: Prosopagnosia is defined as: 
 Options:  <1> Extreme form of agnosia characterized by the inability to recognize familiar faces. <2> Failure to recognize objects by touch. <3> Loss of ability to visualize images. <4> Form of anosognosia in which the patient denies his blindness. <5> Perceptive experience of an amputated limb.
Example Output: 1

Example Input: Question: The primosome: 
 Options:  <1> It is also called primasa or Dna G protein. <2> It is the complex responsible for the synthesis of the Okazaki fragments. <3> It is a bacterial DNA ligase. <4> It is located in the mitochondria. <5> It is a functional unit of the bacterial replication complex.
Example Output:
5