$A$: Yellow bone marrow is reserve erythropoietic tissue.
$R$: After severe bleeding,yellow marrow may convert to red marrow.
$R$: After severe bleeding,yellow marrow may convert to red marrow.
- AAssertion and Reason both are correct and Reason is the correct explanation of Assertion.
- BAssertion and Reason both are correct but Reason is not the correct explanation of Assertion.
- CAssertion is correct,but Reason is incorrect.
- DBoth Assertion and Reason are incorrect.
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