In which process states is it impossible to interrupt/kill a process? (Choose two.)

A process in the 'S' state (Sleep) is waiting for an event but can be interrupted and terminated by signals.

A process in the 'R' state (Running) is actively using the CPU or is ready to run and can be interrupted and killed by signals.

A process in the 'D' state (Uninterruptable Sleep) is waiting for an I/O operation to complete and cannot be interrupted by signals, including kill signals, until the operation finishes.

A process in the 'Z' state (Zombie) has already completed execution but its process entry remains in the process table, waiting for its parent to reap its exit status; since it's already dead, it cannot be killed.