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 blood flow velocity is maximum in:
Options: <0> Great arteries <1> Distribution arteries. <2> Arterioles <3> Capillaries <4> Venules

A: biology
****
Q: Question: The reaction conditions for the preparation of 2-methyl-2-methoxypropan-1-ol from 2,2-dimethyloxirane are:
Options: <0> Methanol in acid medium. <1> Lithium aluminum hydride in methanol. <2> Methylmagnesium bromide and subsequent hydrolysis. <3> Sodium methoxide in methanol. <4> Triphenylphosphine in methanol.

A: chemistry
****
Q: Question: On a blood agar plate, a greenish or brown halo around a bacterial colony indicates that the bacteria produces:
Options: <0> A siderophore. <1> hemolysis. <2> Coagulase <3> galactosidase. <4> Neutral metabolites

A:
biology
****