A fork system call will fail if ______________

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A fork system call will fail if ______________
A. the previously executed statement is also a fork call
B. the limit on the maximum number of processes in the system would be executed
C. the limit on the minimum number of processes that can be under execution by a single user would be executed
D. all of the mentioned
The correct choice is B. the limit on the maximum number of processes in the system would be executed