A solid compound contains X,Y and Z atoms in a cubic lattice with X atoms occupying the corners ,Yatoms in the body centred position and Z atoms at the centre of the faces of the unit cell .What is the empirical formula of the compound?
A. `XY_(2)Z_(3)`
B. `XYZ_(3)`
C. `X_(2)Y_(2)Z_(3)`
D. `X_(8)YZ_(6)`