题目4单选题
曲线<img src="https://tihai-oss-cloud.itihey.com/img/3ffab32238299487b265b1abd8aeeb86.png">的渐近线为( )A. 无渐近线B. 无水平渐近线,<img src="https://tihai-oss-cloud.itihey.com/img/ed2e7a8f71d042c50a4480eda3732785.png">C. 水平渐近线为y=0,<img src="https://tihai-oss-cloud.itihey.com/img/492c5f7bfd360beaa20c0c3e094632e7.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/dcb84dea93feb44ba9bf8a7efb901a79.png">