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'.

Input: Consider Input: Question: A classification of gas chromatography detectors commonly found in the literature divides them into concentration and mass detectors, destructive and non-destructive, integral or differential and universal or selective. According to this classification:
Options: <1> The thermal conductivity detector is a selective detector. <2> The flame ionization detector responds to the concentration of the analyte. <3> The thermal conductivity detector responds to the concentration of the analyte. <4> The phosphorus and nitrogen detector (NPD) is a universal detector. <5> The thermocalorimeter detector is of the differential type.

Output: 3

Input: Consider Input: Question: Regarding gastroesophageal reflux disease, which of the following statements is true?
Options: <1> The intensity and frequency of heartburn has little relationship with the presence and severity of endoscopic esophagitis. <2> Most patients with gastroesophageal reflux disease have esophagitis at endoscopy. <3> Treatment with proton pump inhibitors usually achieves good control of symptoms but is not superior to placebo in the endoscopic cure of esophagitis. <4> Barrett's esophagus can progress to low-grade epithelial dysplasia, high-grade epithelial dysplasia, and finally squamous cell carcinoma of the esophagus. <5> Endoscopic screening and surveillance programs have unequivocally shown to be able to reduce mortality in patients with Barrett's esophagus.

Output: 1

Input: Consider Input: Question: In the initiation of voluntary movements the first area that is activated is:
Options: <1> Premotor cortex. <2> Primary motor cortex. <3> Brain stem <4> Cerebellum. <5> Basal ganglia
Output: 1