There are 200 tracks on a disk platter and the pending requests have comein the order — 36, 69, 167, 76, 42, 51, 126, 12, and 199. Assume the arm is located at the $$100^{th}$$ track and moving towardstrack 200. If sequence of disc access is 126, 167, 199, 12, 36, 42, 51, 69, and 76 then which disc access scheduling policy is used?

A

Elevator

B

Shortest Seek-time First

C

C-SCAN

D

First Come First Served