You will be given a definition of a task first, then some input of the task.
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.

Question: A 45-year-old man, diagnosed with hypertension, has started a monotherapy treatment to decrease peripheral resistance and prevent the retention of CINa and water. The patient has developed a persistent cough. Which of the following drugs would have identical beneficial actions to that already used, but without coughing the patient ?:
Options: <0> Losartan. <1> Nifedipine <2> Prazosin <3> Propranolol <4> Enalaprilo.
Output:
pharmacology