Assertion: Metaphase II begins with splitting of centromere of each chromosome into two.
Reason: In Anaphase II chromosomes align at the equator.

Options

A. If both assertion and reason are true and reason is the correct explantion of assertion
B. If both assertion and reason are true but reason is not the correct explnantion of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

To analyze the given assertion and reason, we need to break down the statements and evaluate their accuracy based on our understanding of cell division, particularly meiosis.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states: "Metaphase II begins with the splitting of centromere of each chromosome into two."
- In Metaphase II of meiosis, the chromosomes are aligned at the equatorial plane of the cell, and the centromeres have not yet split. The splitting of the centromeres occurs during Anaphase II, not Metaphase II. Therefore, this assertion is **false**.

2. **Understanding the Reason**:
- The reason states: "In Anaphase II chromosomes align at the equator."
- In Anaphase II, the centromeres split, and the sister chromatids are pulled apart towards opposite poles of the cell. Chromosomes align at the equator during Metaphase II, not Anaphase II. Hence, this reason is also **false**.

3. **Conclusion**:
- Since both the assertion and the reason are false, the correct answer is that both statements are incorrect.

### Final Answer:
Both the assertion and the reason are false.