(8) Last month, when 10,000 units of a product were manufactured, the cost per unit was $60. At this level of activity, variable costs were 50% of total unit costs. If 10,500 units are manufactured next month and cost behaviour patterns remain unchanged, how will costs be affected? A. Total variable costs will remain unchanged. B. Fixed costs will increase in total. C. Variable cost per unit will increase. D. Total cost per unit will decrease