You loaded the factory-default configuration on your Junos device. Which single element must be configured before a commit command will succeed?

You loaded the factory-default configuration on your Junos device. Which single element must be configured before a commit command will succeed?

A. An IPv4 address must be configured on the fxp0 or em0 interface B. A hostname must be configured C. A root password must be configured D. An IPv4 default route must be configured