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.

[Q]: Question: A 75-year-old woman, with menopause at 52 years of age, with no family or personal history of a fracture, diagnosed with temporal arteritis, who is going to start treatment with prednisone at high doses and with an expectation of treatment for at least one year. The delay of densitometry (DXA) in its center is 4-5 months. Preventive treatment of osteoporosis is proposed. Among the following, which is the most appropriate attitude ?: 
 Options:  <0> Request DXA and wait for the result. <1> Assess absolute risk of fracture using the FRAX questionnaire without BMD and treat only if it is high. <2> Start treatment with bisphosphonates and vitamin D (800 IU / day). <3> Administer calcium supplement (1g) and vitamin D (800 IU / day). <4> Assess if you have osteopenia on the radiographs and treat if it is present.
[A]: medicine


[Q]: Question: A 72-year-old woman with type 2 diabetes and chronic renal failure in stage 5. If a pulmonary thromboembolism is suspected, indicate which diagnostic test would be contraindicated: 
 Options:  <0> Transthoracic echocardiogram. <1> Pulmonary scintigraphy <2> Pulmonary angioCT. <3> Electrocardiogram. <4> Chest x-ray.
[A]: medicine


[Q]: Question: Under physiological conditions, the secondary structure of the most frequent DNA in the cells is: 
 Options:  <0> B-DNA. <1> Z-DNA. <2> A-DNA. <3> G-DNA. <4> H-DNA.
[A]:
biology