Final answer:
The cost of the wine and fruit juice in the production of wine coolers at La Jolla Beverage Products is considered a relevant cost because it depends on the production decision made by the company.
Step-by-step explanation:
In the scenario presented, the cost of the wine and fruit juice is a relevant cost as it depends on the production decision made. Relevant costs are costs that will be directly affected by a specific business decision. In this case, the decision to produce the wine cooler dictates the amount of white wine, rosé wine, and fruit juice that La Jolla Beverage Products will purchase and use. Since the costs will vary depending on the production levels, these are not sunk costs — which are costs that have already been incurred and cannot be recovered — but rather variable costs directly tied to the decision to produce and sell the wine coolers.