A service provider needs to use VLANs 100,200, and 300 to offer three different services to customers. The customer VLAN range is 900 through 999. Which two tag configurations must the operations engineer configure to avoid VLAN overlapping? (Choose two.)
A. 802.1ad outer VLANs are 100, 200, 300
B. 802.1ad outer VLANs are 900-999
C. 802.1ad inner VLANs are 900-999
D. rewrite VLANs 900-900 to 100,200,300
E. rewrite VLANs 100, 200, 300 to 900-900
F. 802.1as inner VLANs are 100, 200, 300
