Given an HttpSession session,a ServletRequest request,and a ServletContext context,which retrieves aURL to /WEB-INF/myconfig.xml within a web application?()
A、session.getResource("/WEB-INF/myconfig.xml")
B、request.getResource("/WEB-INF/myconfig.xml")
C、context.getResource("/WEB-INF/myconfig.xml")
D、getClass().getResource("/WEB-INF/myconfig.xml")