What indicates that the charge on the CMOS battery could be getting low?

What indicates that the charge on the CMOS battery could be getting low?

• A beep error code occurs during POST.
• The computer time and date are incorrect.
• The computer fails to boot.
• Performance while accessing files on the hard drive is slow.
  

  Answers Explanation & Hints: The computer time and date are held in CMOS. This requires power from a small battery. If the battery is getting low, the system time and date may become incorrect.