To Close a Connection, Which of the Following Statements Can

Multiple Choice

To close a connection, which of the following statements can you use?

A) URL u = new URL("http://www.yahoo.com") ;
URLConnection conn = u.close() ;
B) URL u = new URL(str) ;
URLConnection conn = new URLConnection(u) ;
C) URL u = new URL(str) ;
URLConnection conn = u.closeURLConnection() ;
D) There is no need to close the connection.