question 2

1. The following query

   		SELECT c.CustomerName AS Customer, b.CustomerName AS BilledToCustomer
   		FROM Sales.Customers b
   		JOIN Sales.Customers c ON b.CustomerID = c.BillToCustomerID
   		is an example of:
   		a) Left Outer Join
   		b) Cross Join
   		c) Right Outer Join
   		d) Self Join