Consider the set of rights{read, write, execute, append, list, modify, own}.

a)Using the syntax in Section 2.3, write a command delete_all_rights(p, q, o) that causes subject p to delete all rights the subject q has over an object o.

b)Modify your command in (a) so that the deletion of rights can occur only if subject p has modify rights over object o and subject q does not have own rights over object o.