Disk requests are received by a disk drive for cylinders5, 25, 18, 3, 39, 8 and 35 in that order. A seek takes 5 msecper cylinder moved. How muchseek time is needed to serve these requests for a Shortest Seek First (SSF) algorithm? Assumethatthe arm is at cylinder ?,0 when the last of these requests is made with none of the requests yet served

A

125 msec

B

295 msec

C

575 msec

D

750 msec