[单选题]From the node node u of the binary tree of n nodes to the root node node by node, the following mistakes are:从n个节点的二叉树的叶节点u逐个节点地上溯到根节点的过程中，以下说法中错误的是：iea答案窝(daanwo.com)-大学生作业答案及考资分享平台
AThe passing nodes are all ancestors of u.经过的节点都是u的祖先。iea答案窝(daanwo.com)-大学生作业答案及考资分享平台
BThe worst time complexity is O(n)最坏时间复杂度为O(n)iea答案窝(daanwo.com)-大学生作业答案及考资分享平台
CThe path that is passed is uniquely determined经过的路径是唯一确定的iea答案窝(daanwo.com)-大学生作业答案及考资分享平台
DEach time it goes up one level, the depth of the current node decreases by one and the height increases by one.每上溯一层，当前节点的深度减小1，而高度增加1。