Anumber should be rounded up if a it is the first digit b the number after it is between 0 and 4 C the number after it is between 5 and 9 D. it is the last digit Please select the best answer from the choices provided

The chemical reactions lab we did is typically called a "copper plating lab,  because the acid solution cleaned the pennies and made the copper look shinier;   the acid solution cleaned the paperclips and made them look like pennies;   &   the copper from the pennies was removed, and then added to the paperclips. 

20hope i helep