Harvey Corporation produces several joint products from common materials and shared production processes. Why are costs incurred

Question:

Harvey produces several joint products from common materials and shared production processes. Why are costs incurred up to the split-off point not relevant in deciding which products Harvey sells at the split-off point and which products it processes further?
Corporation
A Corporation is a legal form of business that is separate from its owner. In other words, a corporation is a business or organization formed by a group of people, and its right and liabilities separate from those of the individuals involved. It may...