What is the maximum number of color samplers that can be stored using the Color Sampler tool?

Jimmy, a computer technician, is told that one particular key doesn't work on a keyboard. What should Jimmy do first?

A) Remove the key and use compressed air. B) Spray the problem area with a cleaning solution like window cleaner. C) Use cotton swabs and a bit of bleach to get under the key. D) Replace the keyboard.

?How are calculated fields created in Microsoft Access 2016?

What will be an ideal response?