What does $"$UX$"$ refer to and how does it relate to writing professional documents?

A$)"$UX$"$ stands for "Uniform Excellence" and refers to the expectation that all professional writing will be perfect in all formats.

B$)"$UX$"$ stands for "User Experience," and for professional writing, we need to create documents that will be positive reading experiences for our users $($i$.$e$.,$ readers$).$