Which of the following statement(s) is/are) true? (You may select more than one answer.) a sunk cost may be a relevant cost considering some circumstances. Future costs that differ among alternatives are irrelevant. The same cost may be relevant or irrelevant depending on the decision context All the variable costs and traceable fixed costs are relevant costs in making decisions Common fixed costs should be allocated to business segments for decision making purposes. When making decisions, common fixed costs that are allocated among business segments based on each segment's sales revenue may understate the true profitability of those segments