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: The Grignard reagents attack the epoxides to give, after the appropriate hydrolysis: 
 Options:  <0> Carboxylic acids. <1> Cyclic amides. <2> Open aliphatic chains. <3> Open-chain alcohols. <4> Cyclic ethers.

A: pharmacology
****
Q: Question: In relation to the risk factors of cardiovascular diseases, which of the following statements is NOT correct? 
 Options:  <0> Regarding LDL cholesterol, the therapeutic objective depends on the global cardiovascular risk. <1> Type 2 diabetic patients should be considered at high cardiovascular risk and the objective in terms of LDL cholesterol should be <100 mg / dL. <2> There is not enough evidence that low levels of HDL cholesterol suppose a cardiovascular risk factor. <3> The important thing about the risk associated with hypertension is that it improves when blood pressure is reduced regardless of the type of drug used. <4> The existence of coronary disease in the family is a risk factor for the patient.

A: medicine
****
Q: Question: In the evaluation of a base with hydrochloric acid, it is known that the equivalence point appears at pH 5.54. If the bromocresol purple is used as indicator, whose turning interval is 5.2-6.8, the end point is observed at pH: 
 Options:  <0> 6.0, with a small error by default. <1> 6.8, with an error by excess. <2> 5.2, with a small error for excess. <3> 5.54. There is no error <4> 6.0, with an error for excess.

A:
chemistry
****