A project manager is leading an integration project for a retail company The project demands a lot of time from the stakeholders to make important business decisions The project is critical and must be completed on time and within budget一个项目经理正在领导一个零售公司的整合项目。这个项目需要利益相关者花费大量的时间来做出重要的商业决策。这个项目非常关键，必须在预算内按时完成。What should the project manager do to ensure that key stakeholders are available for this project?项目经理应该做些什么来确保关键利益相关者可以参与这个项目？
选项：

A:Schedule meetings with all of the stakeholders to make business decisions when needed安排与所有利益相关者的会议，以便在需要时做出业务决策。
B:Share the project schedule, milestones, and meeting agendas with the stakeholders ahead of time提前与利益相关者分享项目进度表、里程碑和会议议程。
C:Work with the available stakeholders to make business decisions and keep all unavailable stakeholders informed与可用的利益相关者一起做商业决策，并让所有不可用的利益相关者了解情况。
D:Add time reserve in the project schedule to allow extra time for the stakeholders to make decisionsD在项目进度表中加入时间预留，让利益相关者有更多时间作出决定。