The project manager must maintain an effective communication link with the customer’s satisfaction with the progress of the project. The project manager maintains this link through （71）.
A.
Periodic project reports, periodic visits to the customer, and telephonic exchanges
B.
Subordinates, project team members, and the project sponsor
C.
One-time reports, weekly reports, and monthly reports
D.
The telephone, facsimile, and data transmission
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