What is the significance of the multicast address range: 224.0.0.1 through 224.0.0.254?

What is the significance of the multicast address range: 224.0.0.1 through 224.0.0.254?

A.
They have link-local scope.

B.
They have administrative region scope.

C.
They are reserved for future use.

D.
They have a scope of two or more hops from a router.