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The particular solution of the differential equation $\dfrac{d y}{d x}=\dfrac{\cos x}{x^{2}}-\dfrac{2 y}{x}$ under the initial conditions $x=\pi$ and $y=1$ is

 

A. $y=\frac{\sin x-\pi^{2}}{x^{2}}$

 

B. $y=\frac{\pi^{2}-\sin x}{x^{2}}$

 

C. $\quad y=\frac{\sin x+\pi^{2}}{x^{2}}$

 

D. $\quad y=-\frac{\sin x+\pi^{2}}{x^{2}}$

 

E. None of these
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