Sally is reviewing the performance of several portfolios in the family trusts. Trust A is managed by Wall Street Investment Advisors and Trust B is managed by LaSalle Street Investment Advisors. Both trusts are invested in a combination of stocks and bonds and have the following returns:
                                    Trust A                        Trust B
Year 1                             15%                             12%
Year 2                             10                                15
Year 3                             -4                                -2
Year 4                             25                                 20
Year 5                             -8                                 -5
a. Calculate the annualized geometric and arithmetic returns over this 5-year period.
b. Which manager performed the best, and is there a significant enough difference for Sally to move her money to the winning manager?
c. Explain the difference between the geometric and arithmetic returns.