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If the equation of the plane passing thr...

If the equation of the plane passing through the line of intersection of the panes `ax + by + cz +d=0, a _(1) x + b _(1) y + c _(1) z + d _(1) =0` and perpendicular to the XY-plane is `px + py + rz + s =0` then S =

A

`dc _(1)-d _(1) c `

B

`dc _(1) + d _(1)c `

C

`d d _(1) + c c_(1)`

D

`a a _(1) + b b_(1) + c c _(1)`

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The correct Answer is:
A
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