A technician is performing preventive maintenance on the hardware components in a workstation. Which of the following actions should the technician take？ （）

• A、Remove the case front and clean the air vents.
• B、Unplug the capacitors from the board and clean the contacts.
• C、Remove the processor and clean the pins with an eraser.
• D、Remove the processor and clean any dust that has collected between the processor and the heatsink.