Answer:
The correct answer is letter "B": diseconomies of scale.
Step-by-step explanation:
Diseconomies of scale is a point where a business no longer experiences a reduction in cost per unit of output. Instead, after this point, the cost per unit tends to increase.
A number of factors contribute to diseconomies of scale. For example, if a manufacturing process involves multiple steps, there may be a volume level that creates a neck bottle for a single process. Shipping can also lead to diseconomies of scale.