Read the sentence from the article:

Then they could store that information in a piece of code, or a "token" that would work with many websites and reading apps.


question :How does this detail develop the article's central idea?

answer choices:
a-It shows how many websites and reading apps will be slow to adopt changes to their text style.

b-It shows that the coding involved in changing text style is highly complex and hard to create.

c-It shows how readers will have to pay for a token each time they want to change text style in an app.

d-It shows how readers could one day choose the text style that is easiest for them to read.