Final answer:
Relative sales value at split-off is used to allocate joint costs to products up to the split-off point, but not for costs incurred after this point. The correct answer to the question is Option A.
Step-by-step explanation:
The question refers to the method of allocating joint costs and costs beyond split-off in product costing, which is a topic within managerial accounting, a subset of the Business field. Relative sales value at split-off is a method used to allocate joint costs to different products produced from a common input or process (known as joint products) up to the point where they can be separately identified or sold, which is the split-off point.
The correct answer to whether relative sales value at split-off is used to allocate joint costs, but not costs beyond split-off, is Option A: Yes, relative sales value at split-off is used to allocate joint costs; No, it is not used to allocate costs beyond split-off. After the split-off point, costs are generally allocated to products based on other methods or are directly traceable to each product.