Essay Question #8: What are four major categories of costs? Provide descriptions for each category. Use your journal article to provide examples. The assignment is to answer the question provided above in essay form. This is to be in narrative form. Bullet points should not to be used. The paper should be at least 1.5 – 2 pages in length, Times New Roman 12-pt font, double-spaced, 1 inch margins and utilizing at least one outside scholarly or professional source related to project management. This does not mean blogs or websites. This source should be a published article in a scholarly journal (Journal of Project Management) or a professional journal (such as PMI’s Project Management Journal). This source should provide substance and not just be mentioned briefly to fulfill this criteria. The journal article should not replace or provide information already in the textbook. It should be used to provide greater detail through examples, research, case studies, etc. The textbook should also be utilized extensively to answer the question based upon the weekly reading. Do not use quotes. Do not insert excess line spacing. APA formatting and citation should be used.