Question 6 (1 point) Cost behaviour refers to whether a cost is incurred in a manufacturing, merchandising, or service company classifying costs as either inventoriable or period costs. how costs react to a change in the level of activity. whether a particular expense has been ethically incurred. how costs react to a change in selling price Question 6 (1 point) Cost behaviour refers to whether a cost is incurred in a manufacturing, merchandising, or service company classifying costs as either inventoriable or period costs. how costs react to a change in the level of activity. whether a particular expense has been ethically incurred. how costs react to a change in selling price