设A,B为B为随机事件,且<img src="https://nimg.ppkao.com/2019-04/wuacheng/2019041216181690684.jpg?sign=72766653b910c0f0002f3379e99be3af&t=62d5a8df" />,则<img src="https://nimg.ppkao.com/2019-04/wuacheng/2019041216182596892.jpg?sign=b06d85aa45a5df17f178f39ee3e4143a&t=62d5a8df" />等于()<br /> <img src="https://nimg.ppkao.com/2019-04/wuacheng/201904121618407191.jpg?sign=8807fe855646b014281d36d017db7776&t=62d5a8df" />
A、A
B、B
C、C
D、D