You are designing an ASP.NET Web application that has common navigation and layout
elements on all pages. You have the following requirements: Maintain common elements in
a single location. Ensure that common elements can be modified and nested without
redeploying the Web application. Allow developers to customize the object model from
individual pages. You need to recommend a solution that can be specified at the
application, folder, or page level. What should you recommend?

A.
Use a master page.

B.
Use a server control.

C.
Use a theme.

D.
Use a page base type.

Explanation: