Select the statement$($s$)$ that is$/$are true about processes and system calls.

Group of answer choices

Processes can go from ready state to waiting state.

A child process that places sys call fork$()$ gets $0$ as the return value of fork$().$

Orphan processes become zombie processes next time they will execute on the processor.

Processes can go from waiting state to ready state.

Sys call wait$()$ takes a process from the ready queue and places it in the waiting queue