How did NAT help resolve the shortage of IPv4 addresses after the increase in SOHO, small office home office, sites requiring connections to the Internet?

A it provides a migration path to ipv6

B. It permits routing the private IPv4 subnet 10.0.0.0 over the internet

C. NAT adds one more bit to the IP address, thus providing more IP addresses to use on the internet

D. It allowed SOHO sites to appear as a single IP address,(and single device), to the Internet even though there may be many devices that use IP addresses on the LAN at the SOHO site