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Axis of a solid cylinder of infinite length and radius \( \mathrm{R} \) lies along \( \mathrm{y} \)-axis it carries a uniformly distributed
\( \mathrm{P} \) current 'I' along \( +\mathrm{y} \) direction. Magnetic field at a

W point \( \left(\frac{R}{2}, y, \frac{R}{2}\right) \) is
(A) \( \frac{\mu_{0} I}{4 \pi R}(\hat{i}-\hat{k}) \)
(B) \( \frac{\mu_{0} I}{4 \pi R}(\hat{j}-\hat{k}) \)
(C) \( \frac{\mu_{0} I}{4 \pi R} \hat{j} \)
(D) \( \frac{\mu_{0} I}{4 \pi R}(\hat{i}+\hat{k}) \)
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