Answer:
a. lower than $0.50
Step-by-step explanation:
As more and more units of output are produced, labor efficiency increases, machine capacity is better utilized, raw materials can be purchased in bulk which reduce the total cost of production.
The above factors give rise to the concept of Economies of scale which leads to a decrease in cost of production as a result of which the average total cost reduces.
Economies of scale refers to savings in cost in the long run owing to efficient use of resources.
Average cost is defined as total cost incurred per unit of output produced. Current average cost = $500/1000 = $0.5. In case of economies of scale, the long run average cost would be lower than $0.5.