Company XYZ provides cable television service to several regional areas. They are currently
installing fiber-to-the-home in many areas with hopes of also providing telephone and Internet
services. The telephone and Internet services portions of the company will each be separate
subsidiaries of the parent company. The board of directors wishes to keep the subsidiaries
separate from the parent company. However all three companies must share customer data for

the purposes of accounting, billing, and customer authentication. The solution must use open
standards, and be simple and seamless for customers, while only sharing minimal data between
the companies. Which of the following solutions is BEST suited for this scenario?

A.
The companies should federate, with the parent becoming the SP, and the subsidiaries
becoming an IdP.

B.
The companies should federate, with the parent becoming the IdP, and the subsidiaries
becoming an SSP.

C.
The companies should federate, with the parent becoming the IdP, and the subsidiaries
becoming an SP.

D.
The companies should federate, with the parent becoming the ASP, and the subsidiaries
becoming an IdP.