Multiple choice technology operating systems which are the Unix flavors ? System V at AT&T lab. BSD (Berkeley Software Distribution) Solaris at Sun Microsystems MAC OS X at Apple Only first two First Three only Reveal answer Fill a bubble to check yourself A,B,C,D Correct answer Explanation System V (AT&T) and BSD (Berkeley) are the two main historical Unix lineages. Solaris is a Unix operating system derived from System V. macOS is Unix-certified and based on BSD. All four are Unix or Unix-based operating systems.