A. [edit interfaces so-0/0/0.0]   user@router# replace family inetaddress /32 with /30
B. [edit interfaces so-0/0/0.0]   user@router# rename family inetaddress /32 to address /30
C. [edit]   user@router# replace interface so-0/0/0.0 family inetaddress /32 with address /30
D. [edit interfaces so-0/0/0.0]   user@router# delete family inet address   user@router# set family inetaddress /30