The factors of the quadratic equation $9x^2-9(a+b)x+(2a^2+5ab+2b^2)=0$ are _____

Question

$\begin{array}{1 1}(A) \; x=\large\frac{2a-b}{3};\frac{a+2b}{3}\\(B)\;x=\large\frac{2a+b}{3};\frac{a+2b}{3} \\(C)\;x=\large\frac{a-2b}{3};\frac{2a+b}{3}\\(D)\;x=\large\frac{a-2b}{3};\frac{2a-b}{3} \end{array}$