$| \mathrm { AB } | = 6$ units\\
$| \mathrm { BH } | = 2$ units\\
$[ \mathrm { BC } ] \cap [ \mathrm { GF } ] = \mathrm { H }$\\
$\mathrm { m } ( \widehat { \mathrm { GHC } } ) = \mathrm { x }$
In the figure, $ABCD$ and $AEFG$ are congruent squares.\\
Accordingly, what is the value of $\tan ( x )$?\\
A) $\frac { 1 } { 3 }$\\
B) $\frac { 2 } { 3 }$\\
C) $\frac { 5 } { 3 }$\\
D) $\frac { 3 } { 4 }$\\
E) $\frac { 5 } { 4 }$