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If the equation of the plane bisecting t...

If the equation of the plane bisecting the line segment joining the points P (3, 2, 4) and Q (-1, 0, -2) and perpendicular to PQ is ax + by + cz + d = 0, then ac + bd

A

A 0

B

B 12

C

C 6

D

D1

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A
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