Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

$I$. They inhibit ovulation and implantation

$II$. They alter the quality of cervical mucous to prevent or retard the entry of sperms

$III$. They prevent the ejaculated semen from entering the female vagina

$IV$. They inhibit spermatogenesis

$A.$ Population density after time $t$

$B.$ Population density at time zero

$C.$ Intrinsic rate of natural increase

$D.$ The base of natural logarithms $(2.71828)$

Identify $A, B, C$ and $D$ from the given equation