If the Magnetic Field Is Uniform Over the Area $\pi$

If the magnetic field is uniform over the area bounded by a circle with a radius R, the net current through the circle is:

A) 0
B) 2 $\pi$ RB $\mu$ ₀
C) $\pi$ R²B/ $\mu$ ₀
D) RB/2 $\mu$ ₀
E) 2RB/ $\mu$ ₀