Find an Equation of a Plane Containing the Point P(2 $x = - 1$

Multiple Choice

Find an equation of a plane containing the point P(2, -1, 1) and perpendicular to the z-axis.

A) $x = - 1$
B) $x = 2$
C) $x = 1$
D) $y = - 1$
E) $y = 2$
F) $y = 1$
G) $z = 1$
H) $z = - 1$