A particle of specific charge \[\frac{q}{m}=\pi \,\,Ck{{g}^{-1}}\]is projected from the origin towards positive x-axis with a velocity of \[10m{{s}^{-1}}\] in a uniform magnetic field \[\overset{\to }{\mathop{B}}\,=-2\hat{k}\,T\] . The velocity \[\overrightarrow{v}\]of particle after time = 1/12 s will be \[(in\,m{{s}^{-1}})\]

• A. \[5[\hat{i}+\sqrt{3}\hat{j}]\]    
• B.        \[5[\sqrt{3}\hat{i}+\hat{j}]\]
• C. \[5[\sqrt{3\hat{i}}-\hat{j}]\]     
• D.        \[5[\hat{i}-\hat{j}]\]