A scientist places four identical cells into four different liquids, each with different concentrations of magnesium.

Cell

Description of Liquid

W

Slightly more magnesium than the cell

X

The least amount of magnesium

Y

Slightly less magnesium than the cell

Z

The most amount of magnesium

Which cells will likely grow larger over time?

cells W and Z
cell W only
cell Y only
cells X and Y