在估算项目成本时，项目经理与一位主题专家（SME）合作，该专家曾有低估交付项目需求所需工作的历时。然而，在所有其他领域，该主题专家是一位很好的贡献者，备受尊重，并且经常有相关方需要他.若要主动减轻低估项目工作的风险，项目经理应该怎么做?

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.

选择了： Periodically review objectives and requirements with the SME during estimation and use other resources to review the submitted estimates. 在估算期间与该主题专家定期审查目标和需求，并使用其他资源审查提交的估算.