A quarter circular loop of radius $R$ and carrying current $I$ is placed in the $x z$-plane as shown in the figure. The $y$-component of magnetic field at $(0, R, 0)$ is

• Correct answer
  A

  $\mu_0 I /(16 \sqrt{2} R)$
• B

  $\mu_0 I /(4 \sqrt{2} R)$
• C

  $\mu_0 I /(8 \sqrt{2} R)$
• D

  $0$

Hence, the correct answer is option: 'A'.