Class B, if you are referring to classful addressing schemes.
The difference between classful IP addressing and classless IP addressing is in selecting the number of bits used for the network ID portion of an IP address. In classful IP addressing, the network ID portion can take only the predefined number of bits 8, 16, or 24. In classless addressing, any number of bits can be assigned to the network ID.
Class C
In classful addressing, the class of an IP address can be determined by the value in the first octet: 0 - 126 class A 128 - 191 class B 192 - 223 class C
For multicast, ip addresses in the range of 224.0.0.0 - 239.255.255.255 are used.
Static IP
An IP address is divided into the network and host (computer) portion. Where the division is made depends on the address class A/B/C or the now more usual classes addressing the netmask.
MAC addressing. IP addressing. port addressing. specific address.
Class D
There are a couple of places where someone can learn about IP addressing. Check out Microsoft's official website for more information and the website called What's My IP.
IP version 4
What are items listed in the This connection uses the following items: field apply to IP addressing?