The point (s) on the curve y^3+3x^2=12y....

The point (s) on the curve `y^3+3x^2=12y`. Where the tangent is parallel to Y- axis , is (are)

A

`(pm4/sqrt2,-2)`

B

`(pmsqrt(11/2),1)`

C

(0,0)

D

`(pm4/sqrt3,2)`

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The correct Answer is:

D

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