Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum .
Reason : Corpus luteum act as endocrine gland and it is stable through out life .

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False .
D. If both Assertion & Reason are False.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that after ovulation, the ruptured Graafian follicle transforms into the corpus luteum. This is a true statement. After ovulation, when the Graafian follicle releases the secondary oocyte, it undergoes a transformation into the corpus luteum.

2. **Understanding the Reason**: The reason given is that the corpus luteum acts as an endocrine gland and is stable throughout life. This statement is partially true but misleading. The corpus luteum does function as an endocrine gland, releasing hormones such as progesterone, estradiol, and inhibin A. However, it is not stable throughout life; it has a limited lifespan and will degenerate if fertilization does not occur.

3. **Conclusion**: Since the assertion is true and the reason is false, we can conclude that the assertion is correct while the reason is incorrect. Therefore, the correct relationship is that the assertion is true, but the reason is false.

### Final Answer:
- Assertion: True
- Reason: False