Calculate the amount of solution (g or mL) that contains each of the following amounts of solute. Express your answer to 3 significant figures and include the appropriate units.
A: 6.00g of NaCl from a 3.1%(m/m) NaCl solution
B: 7.0g of NaOH from a 45%(m/m) NaOH solution.
C: 12.6mL of ethanol from a 7.0%(v/v) ethanol solution.