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.

Example Input: Question: A calcium figure of 11 mg / dL (normal less than 10.5 mg / dL) is found in a 30-year-old patient during a routine business examination. The PTH determination was 45 pg / ml (VN 10-55 pg / ml). The story is anodyne, except for the fact that the mother and the paternal grandfather were diagnosed with hyperparathyroidism and intervened, although they remained hypercalcemic. Which test is most useful to confirm the diagnosis? 
 Options:  <0> 25-OH D. <1> 1,25-OH 2D. <2> Calcium / creatinine ratio in urine. <3> Tubular reabsorption of phosphates. <4> PTHrP.
Example Output: medicine

Example Input: Question: What simple reinforcement programs produce a more stable response pattern ?: 
 Options:  <0> Those of fixed ratio. <1> Those of variable reason. <2> Those of fixed interval. <3> Those of variable interval. <4> All reinforcement programs produce similar response rates.
Example Output: psychology

Example Input: Question: Hypoxemic hypoxia occurs when: 
 Options:  <0> Oxygen diffusion of lungs is difficult. <1> There is decreased blood flow due to cardiogenic shock. <2> The decrease in hemoglobin due to anemia prevents its transport. <3> The cell membrane is altered and can not use oxygen. <4> None is correct.
Example Output:
nursery