Which one of the following graphs, shows the variation of magnetic induction B with distance from a long thin and straight wire carryning a current

According to Ampere's circuital law

$\oint \overrightarrow{\mathrm{B}}.\overrightarrow{\mathrm{dl}}={\mathrm{\mu }}_{\mathrm{o}}(\mathrm{current} \mathrm{enclosed})$

If we consider a circular path around a current carrying conductor.

we get , $B=\frac{{\mu }_0}{4\pi }·\frac{2\pi i}{r}\Rightarrow B\propto \frac{1}{\mathrm{r}}$

So the graph will be like