What does the following output mean?

What does the following output mean?
# eeprom | grep network-boot-arguments
network-boot-arguments: data not available

A.
OBP on this client supports WAN boot and this x86 client can be installed over the network

B.
OBP on thisclientsupports WAN boot and this SPARC client can be installed over the network.

C.
No network information can be set on this client to install it over the network.

D.
BIOS on this client supports WAN boot and this SPARC client can beinstalledover the network.

E.
OBP on this client does support WAN boot but this client’s data disks failed.

F.
WANbootisnot supported and the client cannot be installed over the network.

Explanation:
*WAN boot
SPARC clients of AI installation over the network must support WAN boot.
To boot over the network, AI requires WAN boot support for SPARC clients. You can check
whether your client Open Boot PROM (OBP) supports WAN boot by checking whether networkboot-arguments is a valid variable that can be set in the eeprom.
If the variable network-boot-arguments is displayed, or if the command returns the output network

boot-arguments: data not available, the OBP supports WAN boot and the client can be installed
over the network.
*The following command shows how to check the client OBP for WAN boot support.
# eeprom | grep network-boot-arguments
network-boot-arguments: data not available
In this example, the output network-boot-arguments: data not available indicates that the client
OBP supports WAN boot.
Reference:Installing Oracle Solaris 11.1 Systems,SPARC and x86 Client System Requirements