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<p><b><span style="font-size:22pt">Explaination 167: &nbsp;</span></b></p>

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	<p>
	the statement will create a role call REGISTRAR, grant UPDATE on student_grades to registrar, grant the role to user1,user2 and user3. <br>
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	<p>
	  Incorrect answer : <br>
	</p>

	<p>
	  A the statement does not contain error <br>
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	<p>
	  B there is no MODIFY privilege <br>
	</p>

	<p>
	  D statement does not create 3 users with the role <br>
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	<p>
	  E privilege is grant to role then grant to user <br>
	</p>

	<p>
	  F privilege is grant to role then grant to user
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