The solids W, X, Y and Z are compounds made from two different Group II metals. Their uses are outlined below. Compound W is used to make refractory linings in kilns. Compound X is used as a building material. It may also be heated in a kiln to produce compound Y. If Y is hydrated, it becomes compound Z, which is used in agriculture to treat soils. Which of the following statements about these compounds are correct?
- A1, 2 and 3 are correct
- B1 and 2 only are correct
- C2 and 3 only are correct
- D1 only is correct