Question: Consider a parent process P that has forked a child process C. What happens when C exits while P is waiting for an I/O operation?

Consider a parent process P that has forked a child process C. What happens when C exits while P is waiting for an I/O operation?
A) C cannot exit while P is waiting for an I/O operation
B) C immediately becomes a zombie process
C) C immediately switches to another parent process.
D) C immediately becomes an orphan process.
Explain why

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