In a Healthy Male,how Many Sperm Cells Would Be Expected $\quad$

In a healthy male,how many sperm cells would be expected to form from (a)400 primary spermatocytes? (b)400 secondary spermatocytes?
A)(a)800; $\quad$$\quad$ (b)800
B)(a)1600; $\quad$$\quad$ (b)1600
C)(a)1600; $\quad$$\quad$ (b)800
D)(a)400; $\quad$$\quad$ (b)400
E)(a)100; $\quad$$\quad$ (b)800