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Guido International, a German firm, can borrow money at a fixed rate of 6.2 percent or a variable rate based on 7 percent, plus or minus 2 percent. Guido wants a variable rate loan. Holger Worldwide, also a German firm, can borrow money at a fixed rate of 6.5 percent or a variable rate of 6.75 percent, plus or minus 1.5 percent. Holger prefers a fixed rate loan. What should Guido and Holger do? Please show all the steps.