Which of the Following Queries Would Yield Results That Include

Which of the following queries would yield results that include all customers and all receipts for those customers, only if they have any receipts?

A) SELECT * FROM Customer RIGHT OUTER JOIN Receipt
ON Customer.CustomerID = Receipt.CustomerID
B) SELECT * FROM Customer LEFT OUTER JOIN Receipt
ON Customer.CustomerID = Receipt.CustomerID
C) SELECT * FROM Customer INNER JOIN Receipt
ON Customer.CustomerID = Receipt.CustomerID
D) SELECT * FROM Customer FULL OUTER JOIN Receipt
ON Customer.CustomerID = Receipt.CustomerID