Suppose the following disk request sequence (track numbers) for a disk with 150 tracks is given: 50, 89, 32, 42, 97, 35, and 87. Assume that the initial position of the R/W head is on track 75. Draw the diagrams for arm movement for the seek strategies given below. Calculate the total and average number of tracks travelled and conclude which strategy performed best in given scenario ? a) FCFS b) SSTF c) SCAN d) CSCAN e) LOOK f) CLOOK