Which approach should you recommend?

You are designing a SharePoint 2010 solution that requires custom configuration settings. The solution will reside
in every Web application within the environment because subsequent features depend on these settings. The
server farm that the code is currently deployed to is going to be replaced with a new one. The content databases
will be migrated to the new server farm. Manual changes to any files will not be allowed after the migration is
complete. You need to ensure that the configuration settings are in place on the new server farm.
Which approach should you recommend?

A.
Place your settings within a feature that uses the SPWebConfigModification property to persist the information in the web.config file.

B.
Place your settings in a file named webconfig.MySolution.xml and place it in the \14\config directory.

C.
Place your settings in the current web.config file for each Web application.

D.
Place your settings in the hierarchical object store in the SPPersistedObject class.