The Vector Normal to the Plane Defined by the Points $\frac { 2 } { \sqrt { 5 } } i + \frac { 1 } { \sqrt { 5 } } j$

Multiple Choice

The vector normal to the plane defined by the points (1, 0, 0) , (0, 2, 0) and parallel to the z axis is

A) $\frac { 2 } { \sqrt { 5 } } i + \frac { 1 } { \sqrt { 5 } } j$
B) $\frac { 2 } { \sqrt { 5 } } i - \frac { 1 } { \sqrt { 5 } } j$
C) $\frac { 1 } { \sqrt { 5 } } i - \frac { 2 } { \sqrt { 5 } } j$
D) $\frac { 1 } { \sqrt { 5 } } i + \frac { 2 } { \sqrt { 5 } } j$
E) k.