题目3单选题
对于一棵具有n个结点,度为4的树来说,树的高度至少是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/9b79e844d66784855a97511d8fd2b698.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/f2f8f5e2bb38d0d9afabc22157ec0e65.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/456b93c79861caa66f352c74edfce957.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/e70e96e5ae534da8987126019f6f22cb.png">