A symmetric star shaped conducting wire loop is carrying a steady state current I as shown in the figure. The distance between the diametrically opposite vertices of the star is $$4a$$. The magnitude of the magnetic field at the center of the loop is

A

$$\frac{\mu_{0}I}{4 \pi a}6[\sqrt{3}-1]$$

B

$$\frac{\mu_{0}I}{4 \pi a}6[\sqrt{3}+1]$$

C

$$\frac{\mu_{0}I}{4 \pi a}3[\sqrt{3}-1]$$

D

$$\frac{\mu_{0}I}{4 \pi a}3[2-\sqrt{3}]$$