Which approach should you recommend?

You are designing a feature for a SharePoint 2010 solution that will be activated by default in your site definition.
The values for the configuration settings are based on the particular Web site on which the feature is activated.
You have the following requirements:
Setting the configuration values should not cause downtime.
.The configuration settings must be accessible by other features.
You need to design how the configuration settings will be stored.

Which approach should you recommend?

A.
Specify the configuration settings using the SPWebConfigModification object.

B.
Specify the configuration settings in the property bag for the Web site.

C.
Place the configuration settings in the web.config file.

D.
Place the configuration settings in a list created by the site definition.