单项选择题

Date: March 10
To: All JPC employees
The department heads convened last Tuesday to discuss how to reduce overhead costs. We were surprised that last quarter"s energy consumption was considerably high. Therefore, all employees are advised to eliminate the unnecessary consumption of electric power.
First, please don"t forget to turn off lights when they are not in use. At the end of the working day, each room ______ by the last person to leave it. ______, the maintenance department requests employees unplug any personal electrical appliances that use heat (such as coffee machines) before leaving for the day. Company computers, printers, copiers and ______ office equipment not designed to provide heat can remain connected to power sources.
Steven Hamilton
Office Managing Director

A.another
B.other
C.one another
D.the others