给定一个Servlet的代码片段如下:Public void doGet (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{_____________ out.println ("hi kitty! ") ;out.close () ; } 运行该Servlet时输出“hi kitty!”,则应在此Servlet的下画线处填入的代码是()。
A. PrintWriter out=response.getWriter() ;
B. PrintWriter out=request.getWriter();
C. OutputStream out=response.getOutputStream() ;
D. OutputStream out=request.getWriter();