3.) What is benchmarking? John has $100,000 invested in a variety of high-yield bonds that he has picked out himself. He is curious about how he is performing. Describe a potentially appropriate benchmark that he should use? Suppose John compared his portfolio to a mutual fund that tracks the total bond market why might this not be entirely appropriate? Suppose John compared his portfolio to a mutual fund that tracks the S&P 500 why might that not be appropriate?