As you read the business news, you come across an advertisement for a bond mutual fund – a fund that pools the investments from a large number of people and then purchases bonds, giving the individuals “shares” in the fund. The company claims their fund has had a return of 13½ percent over the last year. But you remember that interest rates have been pretty low – 5 percent at most. A quick check of the numbers in the business section you’re holding tells you that your recollection is correct. Explain the logic behind the mutual fund’s claim in the advertisement.