Which Code Creates a Server Socket on Port PORT_NUMBER and Listens

Multiple Choice

Which code creates a server socket on port PORT_NUMBER and listens for a connection?

A) ServerSocket ss = new ServerSocket(PORT_NUMBER) ;
Socket sock = ss.accept() ;
B) Socket ss = new Server(PORT_NUMBER) ;
ServerSocket sock = ss.accept() ;
C) ServerSocket ss = new ServerSocket() ;
Socket sock = ss.accept() ;
D) ServerSocket ss = new ServerSocket(PORT_NUMBER) ;
Socket sock = new Socket(ss.accept() ) ;