A project manager sends the electrical engineer an e-mail message asking her to prepare a detailed technical report per some instructions given in the e-mail．A week later, the electrical engineer’s department manager visits the project manager to complain that his engineer had spent 45 hours preparing the 80-page report．The project manager indicates that he thought the report would be only 4 pages long．The problem here is one of: （　）
A．Lack of feedback
B．Too many instructions C．Too much communication
D．Lack of trust （　）