The project manager can arrange the project schedule management activities in the following order()。
①Plan schedule Management ②Define Activities
③Estimate Activity Durations ④Sequence Activities
⑤Control Schedule ⑥D(zhuǎn)evelop Schedule
A.①②③④⑤⑥
B.②④③⑥⑤①
C.①③④②⑥⑤
D.①②④③⑥⑤