What are two default user roles in Cisco Nexus Operating System?

What are two default user roles in Cisco Nexus Operating System? (Choose two.)

A.
Admin

B.
Network Operator

C.
Operator

D.
Storage Operator

E.
Root

F.
System Manager

Explanation:
“The Nexus 5000 Series switch provides the following default user roles:
•network-admin (superuser)—Complete read and write access to the entire Nexus 5000 Series
switch.
•network-operator—Complete read access to the Nexus 5000 Series switch.”
http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli_rel_4
_0_1a/sec_rbac.html#wp1230629