When considering the layout principle of user interface design, the best practice is to have three areas of an interface layout. Which of the following is NOT one of those common work areas?
a. Work area (usually the largest part, in the middle)
b. Navigation area (usually at the top or left)
c. Status area (usually at the bottom)
d. Touchscreen area (usually for mobile devices)
Answer: Touchscreen area (usually for mobile devices)