In the Figure,if a = 2 $\mu$ T
B)39 $\mu$ T
C)50 $\mu$

In the figure,if a = 2.0 cm,b = 4.0 cm,and I = 2.0 A,what is the magnitude of the magnetic field at point P?

A) 49 $\mu$ T
B) 39 $\mu$ T
C) 50 $\mu$ T
D) 69 $\mu$ T
E) 13 $\mu$ T