Magnetic field strength at the centre of regular pentagon made of a conducting wire of uniform cross section area as shown in figure is :

Zero even if the current ‘i’ leaves point D instead of point E

$\frac{5{\mu }_{0}i}{4\pi a}\left[2\sin \frac{{72}^{-}}{2}\right]$

$\frac{{\mu }_{0}i}{\pi a}\left[2\sin \frac{{72}^{-}}{2}\right]$

Not zero if current ‘i’ leaves D point instead of E