When using LDAP synchronization to automatically create and synchronize Cisco Unified Communication Manager end users, which two LDAP attributes can be synchronized to directory URI?

When using LDAP synchronization to automatically create and synchronize Cisco Unified Communication Manager end users, which two LDAP attributes can be synchronized to directory URI? (choose two)
A. msRTCSIPprimaryuseraddress
B. mail
C. msRTCIPuseraddress
D. email
E. emailaddress