Which criterion is a vital component for an effective trade block?
A. High internal competition.
B. Similar cultural backgrounds.
C. Equal strength among partners.
D. Complementary, full-spectrum economic bases.
E. Trade blocks never work.
<br/><img src="https://media.cheggcdn.com/media%2F996%2F9960c02e-6a3c-4703-8094-a793a6fb2ac8%2Fimage.png" alt="Allff Refineries must decide among three cities for the construction at a new oil processing center. The firm has selected five factors as a basis for evaluation and
<p>Help me answer this question and explain the answer please. It'srelated to Java</p><p><img alt="17. The class PlanePoint has a single constructor that takes two int parameters, the x-, and y-