A straight wire of finite length carrying current I subtends an angle of \( 60^{\circ} \) at point \( P \) shown. The magnetic field at P is
(1) \( \frac{\mu_{0} I}{2 \sqrt{3} \pi x} \)
(2) \( \frac{\mu_{0} I}{2 \pi x} \)
(3) \( \frac{\sqrt{3} \mu_{0} I}{2 \pi x} \)
(4) \( \frac{\mu_{0} I}{3 \sqrt{3} \pi x} \)