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: The -thalassemia can have its origin in: 
 Options:  <0> The deficit of ferroquetalase. <1> The deficit of HbA2. <2> The presence of HBH. <3> The presence of HbS. <4> The presence of methemoglobin.
Output:
pharmacology