Straight line \( 3 x+4 y=5 \) and \( 4 x-3 y=15 \) intersect at the...

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Straight line \( 3 x+4 y=5 \) and \( 4 x-3 y=15 \) intersect at the point \( A \). Points \( B \) and \( C \) are chosen on these two lines such that \( A B=A C \). Possible equation of \( -B C \) passing through \( (1,2) \) can be
(a) \( 5 x+2 y-9=0 \)
(b) \( 7 x+y-9=0 \)
(c) \( x-7 y+13=0 \)
(d) \( 7 x+3 y-13=0 \)
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