2 For the following questions, select the key term that best matches with the definition provided. - Fixed cost per unit of output, determined by dividing total fixed cost by output at each level of output - Total cost per unit of output, determined by dividing total cost by output at each level of output - Variable cost per unit of output, determined by dividing total variable cost by output at each level of output - The amount by which a firm's revenue exceeds its total (explicit plus implicit) costs; also referred to as pure profit - An expenditure made for the use of a resource A. Average total cost B. Economic profit C. Average fixed cost D. Explicit costs E. Average variable cost