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Find points at which the tangent to the curve `y = x^(3) - 3x^(2) - 9x + 7` is parallel to the x-axis.

A

A. (2, -2), (-2, -34)

B

B. (2, 34),(-2, 0)

C

C. (0,34), (-2, 0)

D

D. (2,2),(-2,34)

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D
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