Instructions: In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Input: Question: The control of the acid-peptic disease is mainly achieved with PPIs (proton pump inhibitors). The PPIs:
Options: <0> They induce the maximum inhibition of gastric secretion after 3-5 days. <1> They are less effective than H-2 antagonists. <2> They are used as monotherapy to eradicate Helicobacter pylori. <3> They have a faster onset of action than H-2 antagonists. <4> They are not useful in the treatment of stress ulcers.
Output:
pharmacology