Which costs will change with an increase in activity within the relevant range? Fixed cost per unit and total variable cost. Fixed cost per unit and total fixed cost. Total fixed costs and total variable cost. Variable cost per unit and fixed cost per unit. Which of the following costs are never relevant? Differential Costs Sunk Costs Avoidable Costs o Opportunity Costs What are opportunity costs? Costs that vary based on production level. Costs that have been incurred in past transactions. Costs that result from choosing one activity over another. Costs that should never be considered. Management should always eliminate a segment or product line if it initially appears to be losing money. O True False