In a mesolecithal egg,one would expect:

Given below are four statements $(A - D)$ each with one or two blanks. Select the option which correctly fills up the blanks in two statements:
$A.$ The human male ejaculates about $(i)$ $200-300$ million sperms during a coitus. Out of which, for normal fertility at least $(ii)$ $60$ percent sperms must have normal shape and size.
$B.$ $A$ primary spermatocyte completes $(i)$ first meiotic division leading to the formation of two equal haploid cells called $(ii)$ secondary spermatocytes.
$C.$ Spermatogenesis starts at the age of $(i)$ puberty due to significant increase in the secretion of $(ii)$ $GnRH$, a hypothalamic hormone.
$D.$ Oogenesis is initiated during embryonic development and at puberty only $(i)$ $60,000-80,000$ primary follicles are left in each ovary.

How many primary follicles are left in each ovary in a human female at puberty?

Give the names and functions of the hormones involved in the process of spermatogenesis. Write the names of the endocrine glands from where they are released.

How many spermatozoa are produced from a primary spermatocyte during spermatogenesis?

How many secondary spermatocytes are required to form $400\,million$ spermatozoa?