Androgens are secreted by the ........ .

Androgens act on the $A$ and influence the male sexual behavior called $B$. These hormones produce $C$ effect on protein and carbohydrate metabolism. Choose the correct combination of $A, B$ and $C$.

In males,the essential hormone for secondary sexual characteristics is

The male hormone is:

High pitch juvenile voice in males can be retained by

$A$ boy after attaining sexual maturity shows muscular growth,growth of facial and axillary hair,aggressive behavior,and a low pitch of voice. These changes are attributed to the . . . . . . hormone.