下列结构中没有旋光性的化合物是<br /> A、<img src="https://static.zxtiku.com/wangke/imgs/topic/9a7027eeebefbb2677a8f52059808956.jpg"/><br /> B、<img src="https://static.zxtiku.com/wangke/imgs/topic/976a575fe0e402475ffd60542441dc46.jpg"/><br /> C、<img src="https://static.zxtiku.com/wangke/imgs/topic/3c5cafe720aa2283c42242d2093092b8.jpg"/><br /> D、<img src="https://static.zxtiku.com/wangke/imgs/topic/0249de07840c36e670bda490bbba6718.jpg"/>