Answer A is correct. You can use DDL triggers to record information every time objects are created, deleted, or altered in a similar fashion to how you use DML triggers when inserting, deleting, and updating data. The question is not asking that the permissions be changed, and this should not be necessary in the given scenario.
For more information, see the following sources:
Chapter 2, "Creating Database Objects," and Chapter 3, "Implementing Database Objects"
SQL Server 2005 Books Online: "SQL Server Database Engine, Designing and Creating Database, DDL Triggers, Understanding DDL Triggers, Understanding DDL Triggers vs. DML Triggers"
"Designing DDL Triggers," http://msdn2.microsoft.com/en-us/library/ms186406.aspx
Within MSDN Library, go to MSDN Home, MSDN Library, Enterprise Servers and Development, SQL Server, SQL Server 2005 Documentation, SQL Server 2005 Books Online, SQL Server Database Engine, Designing and Creating Databases, DDL Triggers, Designing DDL Triggers.