which SharePoint structure should you base each department design?

You are helping a corporate IT department create a SharePoint 2010 information architecture plan. You are
creating guidelines for determining the site structure for new sites within all other departments in the corporation.
The IT department must be able to:
Adjust the physical storage capacity required for each department and create chargebacks based on the amount
of database storage used.
.Assign storage quotas at the departmental level.

.Create site usage reports at the departmental level.
You need to design an information architecture structure that meets all these requirements.
On which SharePoint structure should you base each department design?

A.
Custom site definitions

B.
Custom site templates

C.
Individual site collections

D.
Individual sub sites