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What are the incorrect methods of revocation of access rights?

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in Operating System by (102k points)
What are the incorrect methods of revocation of access rights?

(a) Immediate/Delayed

(b) Selective/General

(c) Partial/total

(d) Crucial

This question was posed to me during an online exam.

My question is based upon Protection topic in section Protection of Operating System

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Right choice is (d) Crucial

To explain: None.

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