Find the Perimeter of the Figure in Radical Form with the Radicals

Multiple Choice

Find the perimeter of the figure in radical form with the radicals simplified.
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A) $14 \sqrt { 3 } \text { in. }$
B) $15 \sqrt { 3 } \text { in. }$
C) 864 in.
D) $( 9 \sqrt { 3 } + 3 \sqrt { 12 } ) \text { in. }$