Practice Question 03 Which statement describes a fixed cost? O When activity declines, its cost per unit increases. O The unit cost varies directly to the activity level. The unit costs stay the same at every activity level. O It varies in total at every level of activity Practice Question 08 Mixed costs consist of a O relevant cost element and a controllable cost element. O variable cost element and a relevant cost element. O fixed cost element and a controllable cost element. O variable cost element and a fixed cost element