On February 1, 2011, Robinson Corp. sold a $700 million bond issue to finance the purchase of a new distribution facility. These bonds were issued in $1,000 denominations with a maturity date of September 1, 2031. The bonds have a coupon rate of 6.00% with interest paid semiannually. Required: c) Explain what layers or textures of risk play a role in the determination of the required rate of return on Robinsons bonds.