网络计划中工作的最迟完成时间的计算程序为，自终点节点开始，（  ）着箭线方向计算到起点节点。

A．Flexibility and quick responses are most helpful in exchanging ideas.
B．Speaking skills are the key ability to arouse the listeners’ passion.
C．In a common process, all the participants make contributions.
D．Social skills are more useful to help you express your opinions better and to make you more popular.