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();}运行次Servlet时输出如下： hi kitty!则应在此Servlet下划线处填充如下代码。() A. PrintWriter out = response.getWriter(); B. PrintWriter out = request.getWriter(); C. OutputStream out = response.getOutputStream(); D. OutputStream out = request.getWriter();