A volumetric pipette has one marked line that indicates a specific volume. Considering polar substances dip downward in a glass volumetric pippette creating a concave meniscus, what is the correct way to read a volumetric pipette to have the most accurate measurement? When the top of the meniscus is at the line When the bottom of the meniscus is at the line When the line is exactly halfway between the top and bottom of the meniscus