Process A opens a file F and then calls fork$(),$ creating child process B$.$ B attempts to close F$.$ What will happen? Process A opens a file F and then calls fork$(),$ creating child process B$.$ B attempts to close F$.$ What will happen? File F closes in process B$,$ but remains open in process A File F closes in process A$,$ but remains open in B File F closes in both process A and B Process B cannot close F$,$ because it is only open in A All of the above None of the above