Which sample has the most solute?

Question

Question 15 options:

200. mL of 0.200 M MgCl2


150. mL of 0.250 M MgCl2


100. mL of 0.300 M MgCl2


100. mL of 0.250 M MgCl2

Answer 1

mols solute = M x L = ?
Calculate each and the highest wins.