How many records would be in the Purchase Order table of a normalized database created from the following flat file?

$\backslash$table$[[$Purchase Order #$,$Purchase Order Date,Vendor Name,Item #$],[100,\frac{2}{01}\frac{?}{?},3M,10],[100,\frac{2}{01}\frac{?}{?},3M,11],[101,\frac{6}{01}\frac{?}{?},$Dupont,$12],[102,\frac{8}{01}\frac{?}{?},$Dupont,$11]]$