Explain which implementation of the protection matrix is more suitable for the following

operations:

(a) Granting read access to a file for all users.

(b) Revoking write access to a file from all users.

(c) Granting write access to a file to John, Lisa, Christie, and Jeff.

(d) Revoking execute access to a file from Jana, Mike, Molly, and Shane.

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