The mean game scores and standard deviations of four seasons of a football team are given below Season 2005 2006 2007 2008 Mean 19 21 12 9 Standard Deviation 3 5 2 8 1 0 4 0 Which statement must be true O The game scores of season 2006 have a greater spread than the game scores of season 2008 The game scores of season 2007 have a greater spread than the game scores of season 2005 The game scores of season 2006 have a greater spread than the game scores of season 2005 The game scores of season 2005 have a greater spread than the game scores of season 2006