A project manager needs to sign a contract with a supplier for a high impact government project. The discussions and negotiations are going on. In the meantime one key vendor made a written complaint to the management that they have not been invited lately after they submitted their proposal.

What should the project manager do to solve the problem and be compliant also?

A. Have the procurement team do a video conference with this vendor.

B. Engage in Direct negotiations with only vendors who did past projects with the company C. Conduct Individual meetings with each potential provider D. Invite all potential sellers into a Bidder conference