Assertion$(A)$: Bit maps are not often used in memory management .
Reason$(R)$: Searching a bitmap for a run of given length is a slow operation.
- Both $(A)$ and $(R)$ are true and $(R)$ is correct explanation for $(A)$
- Both$(A)$ and $(R)$ are true but $(R)$ is not correct explanation for $(A)$
- $(A)$ is true $(R)$ is false
- $(A)$ is false $(R)$ is true
