Which of the following is NOT correct about wireframes?

a$.$ Wireframes are mock$-$ups of the app pages to help define the layout or structure of each page.

b$.$ Wireframes are good tools to ensure that all functionalities in the page are included.

c$.$ Wireframes allow the designer to determine the best way to arrange the different page elements and how the navigation system will work together with the page.

d$.$ Wireframes map out how users move through the app at a high level.