下面HttpServletResponse方法调用，哪些给客户端回应了一个定制的HTTP回应头：( )
response.setHeader("X-MyHeader", "34");
response.addHeader("X-MyHeader", "34");
response.setHeader(new HttpHeader("X-MyHeader", "34"));
response.addHeader(new HttpHeader("X-MyHeader", "34"));
response.addHeader(new ServletHeader("X-MyHeader", "34"));
response.setHeader(new ServletHeader("X-MyHeader", "34"));
