You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: MEAN GIRLS 
Clue: This supernatural TV series was full of mean girls: Cordelia, the insane vampire Drusilla & Glory (a sort of evil god)

Answer: buffy the vampire slayer


Question: Category: DR. WHO... 
Clue: specializes in X-rays & elements, like the one with the atomic number 88 for treating diseases

Answer: a radiologist


Question: Category: BUSINESS & INDUSTRY 
Clue: The Tax Reform Act of 1986 set the tax on these, profits from sold assets, at the same rate as other income

Answer:
capital gains