Assume that printer interrupt priority: 2, disk interrupt priority:4, serial line interrupt priority: 6, Ethernet interrupt priority: 5. Determine the order of interrupt services according to: A user program begins at t = 0. At t = 10, a printer interrupt occurs, needs 25s to be completed it's ISR At t = 15, a disk interrupt occurs, needs 15s to be completed it's ISR At t = 20, ethernet interrupt occurs, needs 10s to be completed it's ISR At t = 25, a serial line interrupt occurs, needs 5s to be completed it's ISR a) Printer-disk-serial line-ethernet-printer b) Printer-disk-ethernet- disk-serial line-printer Printer-serial line -disk-ethernet-disk d) O Printer-disk-serial line- ethernet-disk-printer e) O Printer-disk-ethernet-serial line-ethernet-disk-printer f) Printer-disk-serial line-ethernet