(a) Calculate the volatility (P) of ABC and XYZ Shares. The parameter ? in the exponential weighted moving average (EWMA) ?-? ??.2+ (1-A) Uar model is 0.96. Forecast the 2018 Volatility of ABC using the 2016 and 2017 share prices 51.80 and 52.93 and Volatility of XYZ using share prices 67.14 and 67.35 with the aid of estimated volatility (o2) and EWMA model? (b) Write the GARCH 1) model. Forecast the 2018 Volatility of ABC and XYZ shares using the 2016 and 2017 prices, estimated volatility and the given parameters of a GARCH (, 1) modelo0.000003, a-0.04, and p-0.82 and o- 0.000002, 0.05, and p-0.82.respectively +' (c) Estimate the long-run average volatility of ABC and XYZ and comment on these values