c) The following trend equation, in millions of handbags, based on five years of quarterly data, was developed by the research and planning department of Mustique Holdings, the global giant in the manufacturing of high-quality handbags: Y = 3.39+1.85 The table below gives the seasonal factors for each quarter: Quarter I II III IV Index 110.0 120.0 80.0 90.0 Determine the seasonally adjusted forecast for each of the four quarters of the sixth year. (6 marks) c) The following trend equation, in millions of handbags, based on five years of quarterly data, was developed by the research and planning department of Mustique Holdings, the global giant in the manufacturing of high-quality handbags: Y = 3.39+1.85 The table below gives the seasonal factors for each quarter: Quarter I II III IV Index 110.0 120.0 80.0 90.0 Determine the seasonally adjusted forecast for each of the four quarters of the sixth year. (6 marks)