The multiprogramming scenario of two processes is shown in picture below and, based on the figure, answers the following: (a). Describe the importance of save state into PCBO and reload state from PCB1" during switching from PO to P1. (b). Describe the source(s) of the system call which causes the context switching of the processes. (c). Briefly describe the nature of the multiprogramming algorithm. interrupt or system call process Po executing process P, save state into PCB idle reload state from PCB, idle interrupt or system call executing save state into PCB idle reload state from PCB, executing