Which approach should you recommend?

Your company has a SharePoint 2010 Web application that contains multiple site collections. You have a custom
master page that will be used by every site collection in the application. You need to make sure that changes
made to this custom master page are displayed across all site collections in the Web application.
Which approach should you recommend?

A.
Use SharePoint Designer 2010 to add the new master page to each site collection.

B.
Use the Site Master Page Settings page in the Web browser to apply the new master page to the top-level site of each site collection.

C.
Manually upload the master page to the Master Page gallery of each site collection using the Web browser.

D.
Deploy a solution package using Visual Studio that includes the master page in a feature, and activate the feature in each site collection.