Which of the following options is the best description of these addresses?

As a network administrator of your company, you have just discovered that a large block of
addresses are denied without comment. The range of the blocked addresses is from 224.0.0.0 to
239.255.255.255. Which of the following options is the best description of these addresses?

A.
Unused private addresses

B.
Asia-pacific addresses

C.
Multicast addresses

D.
RFC1918 private addresses