In disk scheduling when SCAN (Look) policy is applied and when last track reached in one direction

The arm returns to the opposite end of the disk and scan begins again.

The service direction is reversed and scan proceeds in opposite direction.

In disk scheduling when SCAN (Look) policy is applied and when last tr

1.	In disk scheduling when SCAN (Look) policy is applied and when last track reached in one direction
A.	The service direction is reversed and scan proceeds in opposite direction.
B.	The arm returns to the opposite end of the disk and scan begins again.
C.	A and B both true.
D.	None of these.
Answer» B. The arm returns to the opposite end of the disk and scan begins again.