Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are:

In a close-packed structure with '$n$ ' atoms:Number of octahedral voids = $n$ Number of tetrahedral voids = $2n$ A hexagonal primitive (HCP) unit cell contains $6$ effective atoms.Octahedral voids = $6$ Tetrahedral voids = $2\times 6=12$ Order: Tetrahedral ($12$) and Octahedral ($6$).