The wavelength of the X-rays that is reflected from an ionic crystal with a lattice structure is 2 nm. The density of the lattice structure is 3.32 g/cm³. The lattice constant of the stricture is 6.0 A. The molecular weight is 108 AMU. The lattice structure is, [Hint: 1 AMU = 1.66×10-27 kg] (a) FCC (b) BCC (c) SC (d) HCP