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The distance of the point (1, 2, 3) from...

The distance of the point (1, 2, 3) from the plane `x+y-z=5` measured along the straight line `x=y=z` is

A

`5 sqrt( 3) `units

B

`10 sqrt( 3) `units

C

`3 sqrt( 3) ` units

D

`3 sqrt( 5)` units

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The correct Answer is:
A
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