A Wire of Radius 0

A wire of radius 0.35 cm carries a current of 75 A that is uniformly distributed over its cross-sectional area. The magnetic field B at a distance of 5.0 cm from the center of the wire is approximately

A) 0.47 mT.
B) 1.5 mT.
C) 0.30 mT.
D) 0.56 mT.
E) 0.24 mT.