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The interior angle bisector of angle A for the triangle ABC whose coordinates of the vertices are A(–8, 5); B(–15, –19)

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The interior angle bisector of angle A for the triangle ABC whose coordinates of the vertices are A(–8, 5); B(–15, –19) and C(1, –7) has the equation ax + 2y + c = 0, then (a, c) =

(A) (10, 77) 

(B) (11, 78) 

(C) (12, 78) 

(D) (9, 67) 

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Correct option (B)

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