Find the Length of the Cross Product of the Vectors $\langle 1,1,1 \rangle$

Multiple Choice

Find the length of the cross product of the vectors $\langle 1,1,1 \rangle$ and $\langle1,1,2 \rangle$ .

A) $\frac { 1 } { \sqrt { 5 } }$
B) $\frac { 1 } { 2 }$
C) $\frac { 1 } { \sqrt { 3 } }$
D) $\frac { 1 } { \sqrt { 2 } }$
E) $\sqrt { 5 }$
F) 2
G) $\sqrt { 3 }$
H) $\sqrt { 2 }$