Q .     If `(2, 7, 3)` is one end of a diameter of the

sphere `x^2+ y^ 2+ z^2- 6x-12y- 2z + 20 = 0`,

then the coordinates of the other end of the

diameter are

VIT 2015
A

`(-2,5,-1)`

B

`(4, 5, 1)`

C

`(2, - 5, 1)`

D

`(4, 5, -1)`

HINT

Let the other end of the diameter be `(x, y, z)`.
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