Problem $1\mathrm{.}3$ The classification of items is given by the following table, based on ABC method. Deduce some conclusions from these results.

$\backslash$table$[[$Item number,Annual demand,Unit cost,Dollar value,classification$],[8,1000,4000,4,000,000,$A$],[5,3900,700,2,730,000,$A$],[3,1900,500,950,000,$B$],[6,1000,915,915,000,$B$],[1,2500,330,825,000,$B$],[4,1500,100,150,000,$C$],[12,400,300,120,000,$C$],[1,500,200,100,000,$C$],[9,8000,10,80,000,$C$],[2,1000,70,70,000,$C$],[7,200,210,42,000,$C$],[10,9000,2,18,000,$C$],[$total$,,,10,000,000,]]$