Question: MULTIPLE ANSWER: Why must a process run signal when it is finished with a critical region? Group of answer choices The call to wait decrements

MULTIPLE ANSWER:
Why must a process run signal when it is finished with a critical region?
Group of answer choices
The call to wait decrements the semaphore count, so an increment is needed.
A process should check to see if another process is waiting on the critical region.
Signal is needed to alert the parent process when a child has been killed.
Without signal, processes can block on a semaphore and will stay blocked.

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