The correct answer is: A. non-normal cash flow.
A non-normal cash flow is a cash flow that occurs with more than one change in sign of cash flow. This means that the cash flow starts out positive, then becomes negative, and then becomes positive again. This type of cash flow is often seen in projects that have a long-term horizon, as there are often many ups and downs in the cash flow over the course of the project.
A normal cash flow is a cash flow that occurs with only one change in sign of cash flow. This means that the cash flow starts out positive and then becomes negative. This type of cash flow is often seen in projects that have a short-term horizon, as there are usually not many ups and downs in the cash flow over the course of the project.
Normal costs are costs that are incurred in the normal course of business. These costs are usually recurring and can be predicted with a high degree of accuracy. Non-normal costs are costs that are not incurred in the normal course of business. These costs are usually non-recurring and cannot be predicted with a high degree of accuracy.
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