The points on the graph y=x^(3)-3x at wh...

The points on the graph `y=x^(3)-3x` at which the tangent is parallel to x-axis are a)`(2,2) and (1,-2)` b)`(-1,2) and (-2,-2)` c)`(2,2) and (-1,2)` d)`(1,-2) and (-1,2)`

A

`(2,2) and (1,-2)`

B

`(-1,2) and (-2,-2)`

C

`(2,2) and (-1,2)`

D

`(1,-2) and (-1,2)`

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The correct Answer is:

D

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