Is there a specific number of "best answer" Голоса an answer needs to get before it's labeled as best answer?

just curious....
 i_luv_angst posted Больше года
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Fanpop Ответы

summerfrog said:
there has to be,I not берег how many,because I vote for best Ответы but they usually don't get the yellow-lined best answer звезда
select as best answer
posted Больше года 
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what I want to know is what happens when your answer gets chosen?
summerfrog posted Больше года
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