Which statement accurately describes a characteristic or function of cookies?

A.
Cookies cannot be deleted from your computer once you accept them, and they never expire.

B.
Cookies contain viruses and should always be rejected, or at least scanned for viruses.

C.
Cookies can read files from your hard drive and e-mail, unless they are session cookies.

D.
Once set, cookies are sent to the server rather than retrieved by the server.