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 treatment consisting of keeping a material at an elevated temperature for a period of time and then cooling it slowly is called: 
 Options:  <0> Normalized <1> Tempered. <2> Annealing. <3> Restored <4> Sintered

A: chemistry
****
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: Hydroxylation of Lys and Pro residues in collagen requires: 
 Options:  <0> Vitamin B. <1> Vitamin A. <2> Vitamin D. <3> Vitamin C. <4> None of the above options.

A:
chemistry
****