Solve the Problem A) X + Y + Z = 10
B) -12x

Multiple Choice

Solve the problem.
- $\text { Find the equation for the tangent plane to the surface } x ^ { 2 } - 10 x y z + y ^ { 2 } = 12 z ^ { 2 } \text { at the point } ( - 1 , - 1 \text {, } - 1 ) \text {. }$

A) x + y + z = 10
B) -12x - 12y + 14z = 10
C) -12x - 12y + 14z = 1
D) x + y + z = 1