Which two of these can cause the phone status error icon that is shown in the exhibit?

Refer to the exhibit.

Which two of these can cause the phone status error icon that is shown in the exhibit? (Choose two.)
A . The Cisco Unified Communications Manager IM and Presence Service is not available.
B . The username and password in Cisco Jabber phone services are misconfigured.
C . The Cisco Jabber initial audio and video settings need to be set.
D . There is no DN configured for the Cisco Unified Client Services Framework in Cisco Unified Communications Manager.
E . The Cisco Jabber does not have the correct phone button template and hence cannot register to the Cisco Unified Communications Manager.
F . The called user presence status is unknown.

Answer: B, D