In the description of IPv4 address and IPv6 address, the correct one is ().
A.
IPv4 address and IPv6 address are 32 bits
B.
IPv4 address is 32 bits, IPv6 address is 128 bits
C.
IPv4 address and IPv6 address are 128 bits
D.
IPv4 address is 128 bits and IPv6 address is 32 bits