MCQ
The life span of human $\text{WBC}$ is approximately.
- ✓Less than $10$ days.
- BBetween $20$ to $30$ days.
- CBetween $2$ to $3$ months.
- DMore than $4$ months.
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$I.$ skeletal $II.$ visceral
$III.$ cardiac $IV.$ non-visceral
The correct option is