Which J-Web tab do you use to add licenses to the device?（）

A. [edit]   user@router# save /var/tmp/current.conf
B. [edit]   user@router# write /var/tmp/current.conf
C. [edit]   user@router# commit /var/tmp/current.conf
D. [edit]   user@router# dump /var/tmp/current.conf

A. the difference between the current candidate configuration and the candidate configuration from one commit ago
B. the difference between the current active configuration and the current candidate configuration
C. the difference between the current active configuration and the active configuration from one commit ago
D. the difference between the current candidate configuration and the archived configuration from one commit ago