An Administrator Needs to Modify a VAP Used for a Branch

An administrator needs to modify a VAP used for a branch office RAP. The VAP's operating mode is currently defined as backup and uses tunnel mode forwarding. The administrator wants to implement split-tunnel forwarding mode in the VAP. Which WLAN operating mode must the administrator define for the VAP before the tunnel forwarding mode can be changed to split-tunnel?

A) Trusted
B) Always
C) Persistent
D) Standard