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How would two state-dependent control objects communicate with each other?(a) By sending messages to each other(b) By transitioning to the same state(c) Through an entity object(d) Through a proxy objectHai đối tượng điều khiển phụ thuộc vào trạng thái sẽ giao tiếp với nhau như thế nào? (a) Bằng cách gửi tin nhắn cho nhau (b) Bằng cách chuyển sang cùng một trạng thái (c) Thông qua một đối tượng thực thể (d) Thông qua một đối

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