设 <img src="https://static.zxtiku.com/wangke/imgs/topic/f3b694304732757d459e5e53fb8fa981.png"/>为高频载波,<img src="https://static.zxtiku.com/wangke/imgs/topic/f6cd5d4da1ce7217ed1600d566f0f6c0.png"/> 为调制信号,下列哪个为双边带调幅波?()