In the accompanying figure of Windows 10, Box A is pointing to the _____.

Which user's computer will likely have the shortest useful life?

A) a user who primarily uses basic word-processing features B) a frequent user but not with a lot of special needs C) a user who does a lot of video editing and image processing D) a user who primarily reads and send e-mail

[Ben Wiedermann] Using the technique we use in Example 3.8 to describe addition, describe exponentiation as a language recognition problem.

What will be an ideal response?