答案及解析：[单选题]Consider inserting a target element e into a BST. when it fails to be found during the search, which

问题：

[单选题]Consider inserting a target element e into a BST. when it fails to be found during the search, which node does _hot correspond to?
对BST进行插入操作，对待插入的目标元素e进行查找后，若查找失败，_hot指向的节点为：
AThe node to be inserted 待插入的节点
BThe parent of e after the insertion e被插入后的父亲
CThe left-child of e after the insertion e被插入后的左孩子
DThe root 根节点