Four sodium hydroxide solutions are prepared by dissolving solid sodium hydroxide in distilled water. Which method produces a solution with concentration of $0.10\ \text{mol dm}^{-3}$? $[M_r:\ \text{NaOH},\ 40]$
- A$1.6\ \text{g of NaOH(s) to make}\ 400\ \text{cm}^3\ \text{of solution}$
- B$3.2\ \text{g of NaOH(s) to make}\ 250\ \text{cm}^3\ \text{of solution}$
- C$4.0\ \text{g of NaOH(s) to make}\ 100\ \text{cm}^3\ \text{of solution}$
- D$8.0\ \text{g of NaOH(s) to make}\ 500\ \text{cm}^3\ \text{of solution}$