The magnetic needle of a tangent galvanometer is deflected at an angle \[30{}^\circ \] due to a magnet. The horizontal component of earth's magnetic field \[0.34\times {{10}^{-4}}\,T\] is along the plane of the coil. The magnetic intensity is

• A. \[1.96\times {{10}^{-4}}\,T\]
• B. \[1.96\times {{10}^{-5}}\,T\]
• C. \[1.96\times {{10}^{4}}\,T\]
• D. \[1.96\times {{10}^{5}}\,T\]