`O^(-2): "CCP"`
`B^(3+) : "Half of octahedral Voids"`
`A^(2+) : 1//8^("th")" of tetrahedral Voids"`
The space lattice describec refers to 

Options

A. fluorite structure
B. rock salt structure
C. spinel structure
D. inverse spinel structure

Answer

C

Explanation

In spinels `O^(-2)` ions in FCC packing. `1/8 th` if TV are occupied by divalent metal ion `A^(+2)` and half of the octahedral are occipied by thvalent metal ion `B^(+3)`. In inverse spinal `O^(-2)` ions are in FCC 1/8 of T.V are occupied by `A^(+2)`. Trivalent metal ions `B^(+3)` are present in `[1/8^(th)TV + 1/4^(th)OV]`