Express the Area of the Figure as a Polynomial in Descending

Multiple Choice

Express the area of the figure as a polynomial in descending powers of the variable $x$ .
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A) $5 x^{2}+15 x-3$
B) $-10 x^{2}+9 x+9$
C) $10 x^{2}+9 x-9$
D) $10 x^{2}-10 x-9$