When total purchases of raw material exceed 30,000 units in any one period then all units purchased, including the initial 30,000, are invoiced at a lower cost per unit.Which of the following graphs is consistent with the behaviour of the total materials cost in a period?
A、B
C、D
A、B
C、D
【参考答案及解析】
Graph A shows that up to 30,000 units, each unit costs a constant price per unit.
Graph A shows that up to 30,000 units, each unit costs a constant price per unit.