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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. OutputStream out = request.getWriter(); C. PrintWriter out = request.getWriter(); D. OutputStream out = response.getOutputStream();