Anthony works as a project manager for a large construction company. He recently sent out a request for proposal to five different vendors to do some special excavation work. One vendor contacted him with a question regarding the depth of the excavation, and another vendor has called with a question regarding the applicable local standard. How should Anthony respond to these questions? He should provide the depth and regulation reference to the two vendors. Anthony should respond to the vendor and tell the vendor the required depth is 30 feet. Anthony should hold a bidder's conference to address all questions from all vendors. To preserve fairness, Anthony should not respond to any questions about the RFP