答案及解析：[单选题]In order to insert a new node in the list as a direct precursor to p, there are four related stateme

问题：

[单选题]In order to insert a new node in the list as a direct precursor to p, there are four related statements为了在列表中插入一个新节点node作为p的直接前驱，有四个相关的语句
①p->pred->succ = node
②node->pred = p->pred
③node->succ = p
④ p->pred = node
The correct execution order of the above statement is: 上述语句执行顺序正确的是：
A③②④①
B③②①④
C①④③②
D④②③①