【单选题】

Attention, employees.As your supervisors should have informed you by now, the building’s electrical system will be undergoing renovations this weekenD、The main purpose of the work is to replace all emergency circuit breakers with more modern versions to ensure the safety of all workers. In addition, the system will be upgraded to accommodate the increase in power necessitated by the opening of our new wing of offices next month. Supplementary electrical outlets will also be added in equipment rooms and near all high-use devices, such as printers and copiers.

Due to the nature of the work, power to the building will need to be switched off and on several times over the weekenD、This could potentially damage any equipment connected to the power grid, so we are asking everyone to unplug all devices, from pencil sharpeners to computer monitors, before they leave for the day.Additionally, there will be no overtime work performed at our offices this weekenD、Anyone who has applied for and received permission for overtime hours should carry out their work at home.
Please contact Ms. Suzuki in the tech department with any questions. Thank you.
What changes are NOT involved in the scheduled work
A、The installation of new power outlets
B．Raising the capacity of the electrical system
C．The replacement of old emergency circuit breakers
D．Redesigning the offices of the tech department