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

Question

( A ) $(x-1)^3$
( B ) $(x+1)^3$
( C ) $(x+1)^2$
( D ) $(x-1)^2$