An equilateral triangular loop having a resistance R and length of each side\[\ell \]is placed in magnetic field which is varying at \[\frac{dB}{dt}=1\,T/s\]. The induced current in the loop will be

• A. \[\frac{\sqrt{3}}{4}\frac{{{\ell }^{2}}}{R}\]
• B.        \[\frac{4}{\sqrt{3}}\frac{{{\ell }^{2}}}{R}\]
• C. \[\frac{\sqrt{3}}{4}\,\frac{R}{{{\ell }^{2}}}\]   
• D. \[\frac{4}{\sqrt{3}}\frac{R}{{{\ell }^{2}}}\]