As the Cost-Driver Level Increases in the Relevant Range,variable Costs

Multiple Choice

As the cost-driver level increases in the relevant range,variable costs per unit of cost driver ________ but total variable costs ________.

A) do not change; increase in direct proportion to the cost-driver activity level
B) do not change; decrease in direct proportion to the cost-driver activity level
C) increase; do not change
D) decrease; do not change