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If the distance of the point P(1,-2,1...

If the distance of the point `P(1,-2,1)` from the plane `x+2y-2z=alpha,w h e r ealpha>0,i s5,` then the foot of the perpendicular from `P` to the place is a. `(8/3,4/3,-7/3)` b. `(4/3,-4/3,1/3)` c. `(1/3,2/3,(10)/3)` d. `(2/3,-1/3,-5/3)`

A

`(8/3, 4/3, -7/3)`

B

`(4/3, 4/3, 1/3)`

C

`(1/3, 2/3, 10/3)`

D

`(2/3, -1/3, 5/2)`

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