Your company has some spare cash to invest for 3 months. You are wondering whether to invest it in Canadian or U.S. Treasury bills, commercial paper, GICS, or CDs. Go to the Bank of Canada site (www.bankofcanada.ca/rates/daily-digest) and the U.S. Federal Reserve System site (www.federalreserve.gov /releases/h15/update/default.htm) and find the latest rates on these investments. Why might you not choose to take the investment offering the highest rate?