estion Completion Status:

A disk drive has $200$ cylinders. The following requests $60,100,40,120,140,20,180$ come to access the disk. $($Each number represents a cylinder.$)$ The read$/$write head just finished the request $80$ ; it is at the position $110$ now. Using CSCAN scheduling method, show the read$/$write head moving path.

A$.110,100,60,40,20,0,180,140,120$

B$.80,60,100,40,120,140,20,180$

C$.110,120,140,180,199,100,60,40,20,0$

D$.110,120,140,180,0,20,40,60$