The partial configuration that is shown was used to configure router on a stick for VLANS 10, 30, and 50. However, testing shows that there are some connectivity problems between the VLANs. Which configuration error is causing this problem?
A. A configuration for the native VLAN is missing.
B. There is no IP address configured for the FastEthernet 0/0 interface.
C. The wrong VLAN has been configured on subinterface Fa0/0.50.​
D. The VLAN IP addresses should belong to the same subnet