Consider a sequence of disk requests as below: Request for Track Number: 30 90 50 140 40 What will be the total head movement, when each of the following algorithms is used: (a) FCFS b) SSTF (c) SCAN (d) C-SCAN (e) LOOK (f) C-LOOK Assume that currently the heads are positioned at track 80. You may also assume that initially the heads are moving towards track number 0, and that the disk has tracks numbered 0 through 199 on each surface. Consider a sequence of disk requests as below: Request for Track Number: 30 90 50 140 40 What will be the total head movement, when each of the following algorithms is used: (a) FCFS b) SSTF (c) SCAN (d) C-SCAN (e) LOOK (f) C-LOOK Assume that currently the heads are positioned at track 80. You may also assume that initially the heads are moving towards track number 0, and that the disk has tracks numbered 0 through 199 on each surface.