Regarding to the polarization <img src="https://static.zxtiku.com/wangke/imgs/topic/abbc670a99b7e535d50405127e11f3d7.jpg"/>, which statement as follows is right?<br/> A、The vector lines of<img src="https://static.zxtiku.com/wangke/imgs/topic/abbc670a99b7e535d50405127e11f3d7.jpg"/> start with positive charges, and end with negative charges.<br/> B、The vector lines of<img src="https://static.zxtiku.com/wangke/imgs/topic/abbc670a99b7e535d50405127e11f3d7.jpg"/> start with positive free charges, and end with negative free charges.<br/> C、The vector lines of<img src="https://static.zxtiku.com/wangke/imgs/topic/abbc670a99b7e535d50405127e11f3d7.jpg"/> start with positive bound charges, and end with negative bound charges.<br/> D、The vector lines of<img src="https://static.zxtiku.com/wangke/imgs/topic/abbc670a99b7e535d50405127e11f3d7.jpg"/> start with negative bound charges, and end with positive bound charges.