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Let the acute angle bisector of the two planes `x - 2y - 2z + 1 = 0 and 2x - 3y - 6 z+ 1= 0` be the plane P. Then which of the following points lies on P ?

A

`(3, 1, - 1/2)`

B

`(-2, 0, - 1/2)`

C

`(4, 0, -2)`

D

`(0,2,-4)`

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