Which approach should you recommend?

You are designing a SharePoint 2010 solution. You need to design the solution to meet the following requirements:
All sites must have a consistent structure when initially created.
.All sites must include a document library that contains Word documents with searchable properties.
.Site users must be able to generate a spreadsheet detailing the properties of the document library contents.
Which approach should you recommend?

A.
Create a feature to create the required site structure programmatically.
Create a content type for the document library.
Create a custom workflow for the document library to allow users to generate the spreadsheet.

B.
Create a feature to create the required site structure programmatically.
Use feature stapling to associate the feature with all site definitions.
Create a custom action for the standard document library to allow users to generate the spreadsheet.

C.
Create a custom site definition for the sites and allow only that site definition to be used.
Create a content type for the document library.
Create a custom action for the document library to allow users to generate the spreadsheet.

D.
Create a custom site definition for the sites and allow only that site definition to be used.
Create a content type for the document library.
Create a custom event receiver to allow users to generate the spreadsheet.