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();