How will Link Aggregation be implemented on a Cisco Wireless LAN Controller?

How will Link Aggregation be implemented on a Cisco Wireless LAN Controller?

A. The EtherChannel must be configured in “mode active”. B. When enabled, the WLC bandwidth drops to 500 Mbps. C. To pass client traffic, two or more ports must be configured. D. One functional physical port is needed to pass client traffic.