George W. Vanderbilt's home was built for family and friends.
How does the information in the article support this statement?

A. by describing the way the Vanderbilts have opened their home for guests and to the public

B. by describing the number of bedrooms and bathrooms and how many guests can stay

C. by describing the various people who had a part in building the Biltmore

D. by describing the grounds and gardens where people can spend time with friends and family