A galvanometer is used in laboratory for detecting the null point in electrical experiments. If, on passing a current of 6 mA it produces a deflection of 2º, its figure of merit is close to :

• A

  333º A/div

• B

  $3\times {10}^{-3}$ A/div

• C

  $6\times {10}^{-3}$ A/div

• D

  666º A/div