Assertion : Mangolias , tulips, and Sassafras are found in Eastern United States and Eastern China only.
Reason : These are examples of restricted distribution .

Options

A. A.If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark (1)
B. B.If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion, then mark (2).
C. C.If Assertion is true, but Reason is false , then mark (3)
D. D.If both Assertion and Reason are false. , then mark (4)

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**:
- The assertion states that Magnolias, tulips, and Sassafras are found only in the Eastern United States and Eastern China.
- We need to verify if this statement is true or false based on botanical distribution.

2. **Evaluating the Assertion**:
- Magnolias, tulips, and Sassafras are indeed found in these regions, which supports the assertion.
- Therefore, the assertion is **true**.

3. **Understanding the Reason**:
- The reason provided states that these plants are examples of restricted distribution.
- Restricted distribution typically means that a species is found in a very limited geographical area.

4. **Evaluating the Reason**:
- However, the distribution of these plants is better described as **discontinuous distribution**.
- Discontinuous distribution refers to species that are related but found in widely separated areas, such as Eastern United States and Eastern China.
- Thus, the reason is **false**.

5. **Conclusion**:
- Since the assertion is true and the reason is false, the correct relationship between the assertion and the reason is that the assertion is true, but the reason is false.

6. **Final Answer**:
- Therefore, the correct answer is that the assertion is true and the reason is false.