methodology used to calculate the Dow averages, at each of the datesAugust 15, 1987, 2013, and 2016. b. Using the data given in the table and assuming a base index value of 10 on August 15, 1987, calculate the market index, using the same methodology used to calculate the S&P indexes, at each of the dates. Closing Stock Prices Stock August 15, 2016 August 15, 2013 August 15, 1987 A $46 $40 $50 B $37 $36 $10 C $20 $23 $ 7 D $59 $61 $26 E $82 $70 $45 F $32 $30 $32 Divisor 0.70 0.72 1.0 0 Note: The number of shares of each stock outstanding has been the same on these dates. Therefore, the closing stock prices will behave identically to the closing market values. c. Use your findings in parts a and b to describe the general market condition bull or bearthat existed between August 15, 2013, and August 15, 2016. d. Calculate the percentage changes in the average and index