题目2单选题
求极限<img src="https://p.ananas.chaoxing.com/star3/origin/d70f9086e077fded74a9928719498e9a.png">A. <img src="https://p.ananas.chaoxing.com/star3/origin/7d101a5ed504d98edef2e713f105fd71.png">B. <img src="https://p.ananas.chaoxing.com/star3/origin/db6bdc02df37613b0a6e4f685d999093.png">C. 1D. <img src="https://p.ananas.chaoxing.com/star3/origin/9e0f7dcf27583b20f5bad4f3aa35fac0.png">