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If the length of perpendicular from (0,0...

If the length of perpendicular from (0,0,0) to the plane ax+by+cz+d=0 where a,b,c,d are in A.P.and `0ltaltd` is 1 units then the value of `(c-a)/(b)`is

A

`sqrt(8)+2`

B

`-sqrt(8)-2`

C

`-sqrt(8)+2`

D

`sqrt(8)-2`

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The correct Answer is:
D
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