Which two statements about NPIV are true？ （）

• A、 After enabling NPIV， switch interfaces can only be placed into NP， F， or SD modes of operation.
• B、 NPV devices log in to NPIV devices.
• C、 NPIV requires the Enterprise License Package.
• D、 NPIV is supported on the Cisco MDS， N7K， and N5K families of switches.
• E、 A director class switch should not be placed into NPIV mode.