A、 request.add Cookie (“username”. “joe”) B、 request.set Cookie (“username, “joe”) C、 response.add Cookie (username”, “joe”)) D、 request.add Header (new Cookie (“username”, “joe”)) E、 request.add Cookie (new Cookie (“username”, “joe”)) F、 response.add Cookie (new Cookie (“username”, “joe”)) H、 response.add Header (new Cookie (“username”, “joe”))