单项选择题

The computing Center is to close from June 5 to 8 as a new system is being installed and tested then.

A．计算机中心将于6月5日至8日关门，因为新系统的安装和考试。
B．计算机中心将于6月5日至8日不开门，因为那时将安装测试新系统。
C．由于安装测试新系统，计算机中心将于6月5日至8日停止对外开放。
D．由于新系统要安装考试软件，计算机中心将于6月5日至8日关闭。
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