(4pts) 19) Differential analysis is an approach to the analysis of relevant costs that focuses on the costs that differ under alternative actions. True O False (4pts) 20) Which of the following statements about sunk costs is true? Sunk costs are the result of past decisions. Sunk costs are never relevant to decisions. Sunk costs do not vary between decision alternatives. All of the above. 21) The point in the production process where joint products become separately identifiable is (4pts) called the conversion point. the point of sale. the split-off point. o the throughput point