The E.C.E. of a metal is `3.3 xx 10^7 kg C^-1`. The mass of metal is `3.3 xx 10^7` kg per coulomb. The mass of metal liberated at the cathode when a 3A current Is passed for 2s will be

Options

A. `19.8 xx 10^-7 kg`
B. `9.9 xx 10^7 kg`
C. `6.6 xx 10^7 kg`
D. `1.1 xx 10^-7 kg`.