Answer:
D. Fixed costs stay constant in total over a wide range of activity levels.
Explanation:
1. The average cost per unit is computed by
= Total cost ÷ number of units
It does not predict the total cost at different levels
2. The direct cost includes direct material, direct labor, etc. It only includes variable cost not fixed cost
Hence, this option is wrong
3. The manufacturing overhead comprises both types of cost i.e fixed cost and the variable cost
Hence, this option is wrong
4. The fixed cost remain the same whether production level changes or not
Therefore, this option is right