Inter-VLAN routing has been implemented in the Company network. In VLAN routing， what are some of the disadvantages of designing a router-on-stick configuration？ （）

A. InterVLAN routing cannot be filtered by the router.
B. The router becomes a single point of failure for the network.
C. Routers will not route STP BPDUs.
D. There is a possibility of inadequate bandwidth for each VLA
E. Additional overhead on the router can occur.
F. NetFlow Switching is required for InterVLAN accounting.