A solution of sodium trioxocarbonate (IV) contains 10.6g in 250cm³ of solution. Calculate the concentration of the solution. [Na₂CO₃ = 106.0]

• A.0.4 mol dm^-3
• B.1.0 mol dm^-3
• C.10.6 mol dm^-3
• D.25.0 mol dm^-3