what system-defined privileges are added?

If you create a custom role and do not assign privileges what system-defined privileges are
added? (Choose two.)

A.
System.Anonymous

B.
System.Read

C.
System.Write

D.
System.Administrator

Explanation:
http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.security.doc%2FGUID-93B962A7-93FA-4E96-B68F-AE66D3D6C663.html