The number of units sold by the company over the years:
Company A → Units sold ( In 2003 + In 2004 + In 2005 + In 2006 + In 2007 + In 2008 )
Company A → 110 + 118 +143 + 126 + 152 + 195 = 844
Company B → Units sold ( In 2003 + In 2004 + In 2005 + In 2006 + In 2007 + In 2008 )
Company B → 91 + 93 + 85 + 99 + 69 + 35 = 472
Company D → Units sold ( In 2003 + In 2004 + In 2005 + In 2006 + In 2007 + In 2008 )
Company D → 112 + 166 + 78 + 83 + 135 + 198 = 772
Company F → Units sold ( In 2003 + In 2004 + In 2005 + In 2006 + In 2007 + In 2008 )
Company F → 64 + 56 +120 + 70 + 176 + 54 = 540
Hence, company B has sold the maximum number of units over the years,
