What is the number of chromosomes in the following cells of a human male?

What is the number of chromosomes in the following cells of a human male?
(i) Spermatogonial cells
(ii) Spermatids
(iii) Primary spermatocytes
(iv) Sertoli cells

(i) 46 (ii) 23 (iii) 46 (iv) 46