Find the magnetic field at point P as shown in the figure. The curved portion is a semicircle connected to two long straight wires.

A

$$\frac{\mu_0 I}{2r}(1 + \frac{2}{\pi})$$

B

$$\frac{\mu_0 I}{2r}(1 + \frac{1}{\pi})$$

C

$$\frac{\mu_0 I}{2r}(\frac{1}{2} + \frac{1}{2\pi})$$

D

$$\frac{\mu_0 I}{2r}(\frac{1}{2} + \frac{1}{\pi})$$