等边双曲线<img src="https://static.zxtiku.com/wangke/imgs/topic/210b91bb06bde548b299700cb39267c2.jpg"/>在点<img src="https://static.zxtiku.com/wangke/imgs/topic/2095601a6119414385c75b3f73b57845.jpg"/>处的切线方程为( )<br/> A、<img src="https://static.zxtiku.com/wangke/imgs/topic/414476c7937af6bd29884c2e04d326b6.jpg"/><br/> B、<img src="https://static.zxtiku.com/wangke/imgs/topic/c8b04ad10de34dbf2d26f08c3b0cda55.jpg"/><br/> C、<img src="https://static.zxtiku.com/wangke/imgs/topic/1a0e2e5ead287b423f7261018ba67083.jpg"/><br/> D、<img src="https://static.zxtiku.com/wangke/imgs/topic/85bf9614a5c8f16a4ce67c53cdd2b41d.jpg"/>