In a Cisco WLAN deployment, it is required that all Aps from branch1 remain operational even if the control plane CAPWAP tunnel is down because of a WAN failure...

In a Cisco WLAN deployment, it is required that all Aps from branch1 remain operational even if the control plane CAPWAP tunnel is down because of a WAN failure to headquarters.
Which operational mode must be configured on the APs?

A. disconnected B. standalone C. lightweight D. connected