A function y = f(x) has a second order d...

A function y = f(x) has a second order derivative `f''(x) =6(x-1)`. If its graph passes thro' the point (2, 1) and at the point the tangent to the graph is `y=3x-5`, then the function is :

A

`(x-1)^2`

B

`(x+1)^2`

C

`(x+1)^3`

D

`(x-1)^3`

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The correct Answer is:

D

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