39 When switching from a traditional costing system to an activity based costing system that contains some batch-level costs the unit product costs of high volume products typically decrease and the unit product costs o low volume product picas nae se O the unit product costs of both high and low volume products typically decrease O the unit product costs of both high and low volume products typically increase 0 the unit product costs of high volume products typically ncrease and the unit product costs of low volume products typically decrease