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If the staight lines 2x+3y-1=0,x+2y-1=0,...

If the staight lines 2x+3y-1=0,x+2y-1=0, and ax+by-1=0 from a triangle with the origin as orthocenter, then (a,b) is given by

A

(-8, 8)

B

(0, 7)

C

(6, 4)

D

(-3, 3)

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A
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