A project manager is working with a vendor on a project when she learns that the vendor has bribed a subcontractor to work on this project instead of fulfilling previous commitments to other projects. What should the she do? A. She should report the offense to management and the project managers of the affected projects. B. She should not do anything because this is the vendor's problem. The project manager herself didn't do anything wrong. C. She should report this to other subcontractors so they know they could get more money from the vendor. D. She should resign from the project so as to remove herself from this type of activity, but keep it to herself rather than cause problems.