How many grams of sodium acetate is to be mixed with 1.0 \( d m^{3} \) 0.4 molar acetic acid solution to have hydrogen ion concentration, \( \left [ H^{+} \right ] = 2 × 10^{- 4} g \) ion \( d m^{- 3} \) in the solution? \( K_{a} = 1.8 × 10^{- 5} ] \)

A 24.52 g

B 0.036 g

C 2.952 g