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Direction cosines of the line passing through `A(2,3,-1)and B(-3,-4,2)` areA. `(-5)/(sqrt(83)),(-7)/(sqrt(83)),3/(sqrt(83))`B. `5/(sqrt(83)),7/(sqrt(83)),3/(sqrt(83))`C. `(-7)/(sqrt(83)),3/(sqrt83),(-5)/(sqrt(83))`D. `-5,-7,3`

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