You are designing an ASP. NET Web application.
The Web application includes a section for sales pages.
You need to ensure that the sales pages share a specific header and a specific footer that differ from those of all other pages in the application.
Which approach should you recommend?

A.
Create the specific header and footer elements in the site’s master page.

B.
Create separate user controls for the specific header and footer and add each of the user controls to the site’s master page.

C.
Create a sales subdirectory.
Add a master.aspx page that contains the header and footer to the subdirectory, and then store all the sales pages in the subdirectory.

D.
Create a sales.master page that contains the header and footer and inherits from your site’s master page, and then use the master page in each sales page.