Thorpe industries produces chemicals for the swimming pool industry. In one joint process, 10,000 litres of XY are processed into 6000 litres of X and 4000 litres of Y. The cost of the joint process, including the XY, is $17500. Thorpe allocates $11800 of the joint cost of X and $5700 of the cost to Y. The 4000 litres of Y can be sold At the split-off point for $3500, or be processed further into a product called Z. The sales value of 4000 litres of Z is $11000, and the additional processing cost is $6700. Required: a) should Y be sold at the split-off point or processed further? b) Provide the reason(S) for your answer to Question (a). c) Are the cost of the joint process, $17500, and the allocation of that cost to X and Y relevant to your decision made to answer Question (a)? (d) Provide the reasons for your answer to question (c)