[单选题]When using a queue to hierarchically traverse a binary tree, the nodes in the queue at any time satisfy:借助队列对二叉树进行层次遍历时,任意时刻队列中的节点满足：Jr7答案窝(daanwo.com)-大学生作业答案及考资分享平台
ABoth are on the path from the root node to the current node均位于从根节点到当前节点的路径上Jr7答案窝(daanwo.com)-大学生作业答案及考资分享平台
BBoth are descendants of the current node均是当前节点的后代Jr7答案窝(daanwo.com)-大学生作业答案及考资分享平台
CThe difference in height does not exceed 1高度相差不超过1Jr7答案窝(daanwo.com)-大学生作业答案及考资分享平台
DThe difference in depth does not exceed 1深度相差不超过1