从积极心理学角度来讲，媒体应该从以下几个方面发挥宣导作用：（1）形成积极的社会舆论；（2）激发积极的（）；（3）提供幸福的榜样。

Given: BAC=200, AC=120, EV=80, CPI=0.666. Assuming that current variances are atypical, and that similar variances will not occur in the future, the estimate at completion (EAC) is ______ .

A) 120
B) 160
C) 200
D) 240