Assertion : Natural Killer cells are found in blood.
Reson : These are type of lymphocytes.

Options

A. If both Assertion & Reason as 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 "Natural Killer cells are found in blood." This is true because Natural Killer (NK) cells are indeed present in the bloodstream as part of the immune system.

2. **Understanding the Reason**: The reason provided is "These are a type of lymphocytes." This statement is also true. Natural Killer cells are classified as lymphocytes, which are a type of white blood cell involved in the immune response.

3. **Relationship Between Assertion and Reason**: While both the assertion and the reason are true, the reason does not serve as a correct explanation for the assertion. The presence of NK cells in the blood does not solely depend on them being a type of lymphocyte; rather, it is due to their role and function in the immune system.

4. **Conclusion**: Therefore, the correct evaluation of the statements is that both the assertion and the reason are true, but the reason is not the correct explanation for the assertion.

### Final Answer:
Both the assertion and the reason are true, but the reason is not the correct explanation for the assertion.

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