Which of the following is/are conservation forces(s)?

1.	Which of the following is/are conservation forces(s)?
Answer» `VECF=2r^(3)vecr` `vecF=-5/rhatr` `vecF=(3(xhati+yhatj))/((x^(2)+y^(2))^(3//2))` `vecF=(3(yhati+xhatj))/((x^(2)+y^(2))^(3//2))` ANSWER :A::C

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