Which of the following is true for WNOHANG, WUNTRANCED, WCONTINUED flags of the waitpid system call.

Group of answer choices

System call state $=$ waitpid$(-1,$&status, WNOHANG$)$ will give us the cause of the change of state of a process if we process variable state with the following Macros: WIFEXITED, WIFSIGNALED.

System call waitpid$($pid$,$&status, WUNTRACED$)$ ensures that one of the two processes involved is allowed to fork a child.

System call waitpid$(-1,$ &status, WCONTINUED$)$ returns $0($success$)$ when the first random child continues.

If WNOHANG is used then it cannot detect when the process has been stopped in system call waitpid$(-1,$&status, WNOHANG$)$

None of the above