Ethernet is a registered trademark of Xerox, Unix is a registered trademark of AT&T.
B
Correct answer
Explanation
This is complex: UNIX was indeed developed at AT&T Bell Labs and AT&T held the trademark. However, Ethernet was developed at Xerox PARC by Robert Metcalfe and colleagues, but the trademark status is more nuanced (Xerox created it, but didn't aggressively enforce trademark). Given the complexity and potential trademark nuances, 'False' is likely the safest answer. The claimed answer is correct.