Assertion: Bone marrow and thymus are primary lymphoid organs. Reason: It provides the sites for interaction of lymphocytes with the antigen.
- AAssertion and reason both are true and the reason is correct explanation of assertion.
- BAssertion and reason both are true but reason is not correct explanation of assertion.
- CAssertion is true but reason is wrong.
- DAssertion and reason both are wrong.
✓ Correct answer: C
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