Elements W and X are metals. Elements Y and Z are non-metals. When the oxides of W, X, Y and Z are each added to water, they all produce solutions. Which statement is correct?
- AThe solution of the oxide of element W turns blue litmus red.
- BThe solution of the oxide of element X fizzes when sodium carbonate is added.
- CThe solution of the oxide of element Y has a pH greater than 7.
- DThe solution of the oxide of element Z fizzes when powdered magnesium is added.