Find the Equation of the Plane Tangent to the Surface $P$

Multiple Choice

Find the equation of the plane tangent to the surface given by the given function at the specified point $P$ $f ( x , y ) = x ^ { 3 } - x ^ { 2 } y , P = ( 1,2 )$

A) $z = - 1 - y - 2$
B) $z = - x - y + 7$
C) $z = - x - y + 2$
D) $z = - x - y$