Please help me for these questions:

1)A Hierarchy Custom Setting stores a specific URL for each profile in Salesforce.
Which statement can a developer use to retrieve the correct URL for the current user´s profile and display this on a Visualforce page?
A.{!$Setup.Url_Settings__c[Profile.Id].URL__c}
B.{!$Setup.Url_Settings_c.Instance[Profile.Id].URL__c}
C.{!$Setup.Url_Settings__c.URL__c}(Missed)
D.{!$Setup.Url_Settings__c[$Profile.Id].URL__c}