The magnetic field at point 'C' due to current flowing in 'M' shape figure is

• A. \[\frac{{{\mu }_{0}}}{2\pi }.\frac{\sqrt{3}i}{\ell }\]
• B. \[\frac{{{\mu }_{0}}}{\pi }.\frac{i}{\ell }\sqrt{3}\]
• C. zero
• D. \[\frac{{{\mu }_{0}}}{4\pi }.\frac{i}{\ell \sqrt{3}}\]