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In UNIX, groups can be created and modified by?

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In UNIX, groups can be created and modified by?

(a) superuser

(b) any user

(c) a programmer only

(d) the people in the group only

I had been asked this question by my school principal while I was bunking the class.

I want to ask this question from File System Interface Protection topic in portion File Systems and their Implementation of Operating System

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Best answer
Correct choice is (a) superuser

The best explanation: None.

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