Magnetic induction at the centre of circular current carrying loop,

$B_1=\frac{{\mu }_{0}i}{2r}$ (downward direction)
Magnetic induction at the centre O due to a straight wire,
$B_2=\frac{{\mu }_0}{2\pi }.\frac{i}{r}$ (upward direction)
Net magnetic induction at O,
$B=B_1-B_2=\frac{{\mu }_{0}i}{2r}-\frac{{\mu }_0}{2\pi }.\frac{i}{r}$
$=\frac{{\mu }_{0}i}{2r}\left[1-\frac{1}{\pi }\right]$ [downward direction]
Hence, there are no options correct.