单项选择题

The following statements have been made in relation to activity-based costing: (1) A cost driver is a factor which causes a change in the cost of an activity (2) Traditional absorption costing tends to under-estimate overhead costs for high volume products Which of the above statements is/are true

A.1 only
B.2 only
C.Neither 1 nor 2
D.Both 1 and 2