When you place a call to 2000, phones 1 and 2 are paged. When you place a call to 2001 pages phones 3 and 4. What command is missing so that a call to 2002 pages all phones1,2,3,4?
A.
paging group 20 21
B.
paging group 10 20
C.
paging group all
D.
paging group 2000 2001 2002