Write, in Factored Form, an Expression for the Area of the Constructed

Multiple Choice

Write, in factored form, an expression for the area of the constructed figure below if A is unknown and B is equal to $6$ .

A) $A ( A + 6 )$
B) $( A - 6 ) ^ { 2 }$
C) $( A + 6 ) ^ { 2 }$
D) $( A + 6 ) ( A - 6 )$
E) $A ( A - 6 )$