Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are:
(1) 8,4
(2) 6,12
(3) 2,1
(4) 12,6

Answer is (4)

Number of octahedral and tetrahedral voids formed by closed packed atoms are and respectively.

Because each hexagonal unit cell has 6 atoms, there are 12 and 6 tetrahedral and octahedral voids, respectively.