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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

(6,4)

B

(-3,3)

C

(-8,8)

D

(0,7)

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The correct Answer is:
C
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