A Customer Is Running a Guest WLAN with a Foreign/export-Anchor

Multiple Choice

A customer is running a guest WLAN with a foreign/export-anchor setup. There is one anchor WLC in the US and two in Europe. Anchor WLC priorities are used to prefer local anchors. During a routine network audit, it is discovered that a large number of guest client sessions in the US are anchored to the WLCs in Europe. Which reason explains this behavior?

A) The foreign WLC failed and recovered.
B) The US anchor WLC failed and recovered.
C) The US anchor WLC is anchored to itself with a priority value of zero.
D) The anchor WLC is in the same mobility group.