During execution of a project which is performed for a customer on a T & M (time and material)contract base，a new project manager is taking over the assignment．He discovers that two members assigned to the project have charged time without performing any work for the project customer．Upon further investigation，he determines that this occurred because there have been no other project assignments open for these employees．The customer is unaware of these facts．Which of the following should he do ？（）
A．Try to find some productive work for these staff members in the project and leave them on the tea
B．The best thing is to do nothinThe customer will not realize the problem anywa
C．Try to find a responsible person for the over-assignment who can be made accountabl
D．Take the two people off the team immediately and arrange for the refund of the excess charges to the custome