What does the Salesforce Administrator have to do?

Universal Container have a points-based Loyalty Program and a B2C commerce website built with a Commerce built with a Commerce Cloud solution; the clients orders are already synchronized with Loyalty Management. With the every purchase, Loyalty members will earn points. The Directory wants to have traceability of every order transaction on the Loyalty Management app.

What does the Salesforce Administrator have to do?
A . Use standard Order Lookup on the Loyalty Ledger object
B. Create a custom text field in Transaction Journal object to save the order purchased by the client.
C. Use the standard Order Lookup of the Transaction Journal Object
D. Create a custom Lookup field in Transaction Journal object to save the order purchased by the Loyalty member.

Answer: C