Though Every Device Connected to the Net Has an IP

Multiple Choice

Though every device connected to the net has an IP address, the Internet's designers added the Domain Name System (DNS) because ________.

A) the enormous growth of the Internet led to the depletion of available IP addresses
B) IP addresses are not displayed in human-readable notations
C) IP addresses are numerical and cannot be easily remembered by users
D) the IP addresses change each time the device is connected to the net