Mike, a technician, is working on a computer and the air is dry. Which of the following choices is the BEST option for Mike to use?（）

A、Use a portable anti-static pad and wrist strap, ensuring all components remain on the mat, and the wrist strap is connected to the mat.

B、Leave the computer plugged in and running, to stabilize the power, and keep one hand on the case at all times while working on the unit.

C、Use a wrist strap, connecting it to the computer case. Leave the computer plugged into the outlet for grounding.

D、Advise the customer it is best if the computer is taken back to the shop for repair, so it will be in a controlled temperature environment.