Which join type should be used?

You use a customer master data table as a left table and a transactional sales data table as a right table within a graphical SAP HANA Calculation View.

You want to focus in your report on transactional data showing both: customers with sales volume and without.

Which join type should be used?
A . Full Outer Join
B . Referential Join
C . Left Outer Join
D . Right Outer Join

Answer: C