$\int \frac{\sin \left(\frac{1}{x}\right) d x}{x^{2}}=$ কত ?

$\cos \frac{1}{x}+c$

$-x \cos \frac{1}{x}+c$

$-\cos \frac{1}{x}+ \mathrm{c}$

$x \cos \frac{1}{x}+c$