**Assertion (A):** Fertilization occurs in the uterus. **Reason (R):** The uterus is the site of implantation.

**Assertion (A):** Parturition (childbirth) involves a positive feedback mechanism. **Reason (R):** Oxytocin-induced uterine contractions stimulate the release of more oxytocin, amplifying contractions until delivery.

**Assertion (A):** The corpus luteum is maintained during early pregnancy. **Reason (R):** The trophoblast secretes hCG, which acts on the corpus luteum to maintain progesterone production.

**Assertion (A):** Both FSH and LH are required for normal spermatogenesis. **Reason (R):** FSH acts on Sertoli cells to support sperm development, while LH acts on Leydig cells to stimulate testosterone, which is essential locally for spermatogenesis.

**Assertion (A):** The secondary oocyte is ovulated (released from the follicle) at the time of ovulation. **Reason (R):** The secondary oocyte is arrested at metaphase II at the time of ovulation. Which of the following is correct?