Cloud Kicks wants to make sure that users without the Marketing role are unable to update the Contact Retail Opt In picklist field to Yes. What validation rule would an app builder use to prevent other users from making this update?

A. AND( $UserRole.Name != 'Marketing', Retail_Opt_In__c = ג€Yesג€ )
B. AND( $UserRole.Name = 'Marketing', Retail_Opt_In__c = ג€Yesג€ )
C. AND( $UserRole.Name = 'Marketing', ISPICKVAL(Retail_Opt_In__c = ג€Yesג€ ) )
D. AND( $UserRole.Name = 'Marketing', ISCHANGED(Retail_Opt_In__c), ISPICKVAL(Retail_Opt_In__c = ג€Yesג€ ) )

Suggest answer: D

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