A solid having density of `9 xx 10^(3) kg m^(-3)` forms face centred cubic crystals of edge length `200 sqrt2` pm. What is the molar mass of the solid ? [Avogadro constant `~= 6 xx 10^(23) mol^(-1), pi ~= 3`]
A. `0.0432 kg mol^(-1)`
B. `0.0305 kg mol^(-1)`
C. `0.4320 kg mol^(-1)`
D. `0.0216 kg mol^(-1)`
