An engineer needs to configure a mobile device that registers with Cisco Unified Communications Manager to utilize voice and video services. The device is Android-based. The username in Cisco Unified Communications Manager is "rsmith." What is the proper device name for the engineer to configure?

A.	ANDRSMITH
B.	ANDSMITHR
C.	BTDRSMITH
D.	BOTRSMITH
E.	UCMRSMTH