During the execution of a road repair project, the budget for risk mitigation procedures and efforts is reduction. What should the project manager do first? 在执行一个道路维修项目期间，风险减轻程序和工作的预算减少，项目经理首先应该是怎么做？ ◑A. Perform a risk analysis执行风险分析 ◑B. Submit a change request提交变更请求 ◑C.Update the risk register更新风险登记册 ◑D.Revise the cost baseline修订成本基准
