**Q : Which of the following statements correctly describe the processes of parturition and lactation in humans?

A. Parturition is the process of delivery of the fetus, which is induced by a complex endocrine mechanism.

B. The signals for parturition originate from the fully developed fetus and placenta, causing mild uterine contractions.

C. Oxytocin, released from the anterior pituitary, acts on the uterine muscles to cause stronger contractions leading to childbirth.

D. The initial milk produced by the mother’s mammary glands after birth is called colostrum and is rich in antibodies essential for the newborn.

Choose the most appropriate answer from the options given below: **

1. A, B, C, and D only

2. A, B, and C only

3. B and D only

4. A, C, and D only