Name the hormones $A, B,$ and $C$ in the given figure.

Signals for parturition originate from

The fresh secretion from animals for the nutrition of their young ones is known as ...

Which gland in the female undergoes differentiation during pregnancy and lactation?

The signals for the parturition process originate from

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$ :
Assertion $A$ : Breast-feeding during the initial period of infant growth is recommended by doctors for bringing up a healthy baby.
Reason $R$ : Colostrum contains several antibodies absolutely essential to develop resistance in the newborn baby.
In the light of the above statements,choose the most appropriate answer from the options given below: