A metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g $$cm^{-3}$$. The molar mass of the metal is : ($$N_{A}$$ Avagadro's constant = $$6.02 \times 10^{23} mol^{-1}$$)

A

$$20  g  mol^{-1}$$

B

$$40  g  mol^{-1}$$

C

$$30  g  mol^{-1}$$

D

$$27  g  mol^{-1}$$