Solve the Problem $\frac { 7 } { \sqrt { 2 } }$

Multiple Choice

Solve the problem.
-Find the distance from the point (1, -1, 2) to the plane x + y - z = 3.

A) $\frac { 7 } { \sqrt { 2 } }$
B) $\frac { 7 } { \sqrt { 3 } }$
C) $\frac { 5 } { \sqrt { 2 } }$
D) $\frac { 5 } { \sqrt { 3 } }$