Refer to the exhibit. A network technician is asked to design a small network with redundancy. The exhibit represents this design, with all hosts configured in the same VLAN. What conclusions can be made about this design?（）

• A、The design will function as intended
• B、Spanning-tree will need to be used.
• C、The router will not accept the addressing scheme.
• D、The connection between switches should be a trunk.
• E、The router interfaces must be encapsulated with the 802.1Q protocol.