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The following three defense stocks are to be combined into a stock index in January 2019 (perhaps a portfolio manager believes these stocks are an appropriate benchmark for his or her performance) Price Shares millions) 1/1/19 1/1/20 1/1/21 Douglas McDonnell 430 $108 $114 $131 Dynamics Gerveral 535 38 34 48 International Rockwell 210 67 56 70 a. Calculate the initial value of the index if a price-weighting scheme is used. Index value b. What is the rate of return on this index for the year ending December 31, 2019? For the year ending December 31, 2020? (A negative value should be indicated by a minus sign. Do not round Intermediate calculations. Enter your answers as a percent rounded to 2 decimal places) 2010 2020 reum