若<img class=jc-formula data-tex=P(B\left| A \right) =1 src=https://huaweicloudobs.ahjxjy.cn/6BF20AEB8F730E84E39D58FD22FD300A.png style=vertical-align: middle; width: 79px; height: 26px; width=79 height=26/>,那么下列命题中正确的是
①
<img class=jc-formula data-tex=A\subset B src=https://huaweicloudobs.ahjxjy.cn/C71575BA4DFD20383E7F5C41F8A28934.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=B\subset A src=https://huaweicloudobs.ahjxjy.cn/625188EC2C532FE4854CE06AB57B5229.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=A-B=\phi src=https://huaweicloudobs.ahjxjy.cn/91C8AFFB9EEC4684601467D3A0322E7C.png style=vertical-align: middle;/>