If $(x+2y)*\frac{dy}{dx}=2x-y,$ what is the value of $\frac{d^{2}y}{d{x}^2}$ at the point $(3,0)?$

$($A$)-\frac{10}{3}$

$($B$)0$

$($C$)2$

$($D$)\frac{10}{3}$

$($E$)$ Undefined