The coil of a galvanometer consists of 100 turns and effective area of 1 square cm. The restoring couple is \[{{10}^{-8}}\,N-m/radian\]. The magnetic field between the pole pieces is 5 T. The current sensitivity of this galvanometer will be [MP PMT 1997]

• A.            \[5\times {{10}^{4}}\,rad/\mu \,amp\]                        
• B.            \[5\times {{10}^{-6}}\,per\,amp\]
• C.            \[2\times {{10}^{-7}}\,per\,amp\]                                  
• D.            \[5\,rad/\mu \,amp\]