在执行一个潜艇现代化项目期间，客户要求安装新的潜望镜。项目经理必须怎么做?

选择了： Conduct the Perform Integrated Change Control process, obtain budget approval and execute the change, request. 执行实施整体变更控制过程，获得预算批准，并执行变更请求

选择了： Check the feasibility, prepare the budget, and obtain change request approval 检查可行性，准备预算，并获得变更请求批准

选择了： Conduct the Perform Integrated Change Control process, obtain budget approval and execute the change, request. 执行实施整体变更控制过程，获得预算批准，并执行变更请求

选择了： Conduct the Perform Integrated Change Control process, obtain budget approval and execute the change, request. 执行实施整体变更控制过程，获得预算批准，并执行变更请求

选择了： Conduct the Perform Integrated Change Control process, obtain budget approval and execute the change, request. 执行实施整体变更控制过程，获得预算批准，并执行变更请求

选择了： Conduct the Perform Integrated Change Control process, obtain budget approval and execute the change, request. 执行实施整体变更控制过程，获得预算批准，并执行变更请求

选择了： Conduct the Perform Integrated Change Control process, obtain budget approval and execute the change, request. 执行实施整体变更控制过程，获得预算批准，并执行变更请求

选择了： Prepare a change request obtain approval from the change control board (B), and implement the change. 准备变更请求，获得变更控制委员会（B）的批准，并实施变更

选择了： Check the feasibility, prepare a quote and the budget, and obtain customer approval. 检查可行性，准备报价和预算，并获得客户的批准

选择了： Check the feasibility, prepare the budget, and obtain change request approval 检查可行性，准备预算，并获得变更请求批准