Fertilisers supply three elements required for plant growth. Which two compounds could be combined to make a fertiliser that contains all three of these elements?
- A$\text{Ca(NO}_3\text{)}_2$ and $\text{(NH}_4\text{)}_2\text{SO}_4$
- B$\text{Ca(NO}_3\text{)}_2$ and $\text{(NH}_4\text{)}_3\text{PO}_4$
- C$\text{KNO}_3$ and $\text{(NH}_4\text{)}_2\text{SO}_4$
- D$\text{KNO}_3$ and $\text{(NH}_4\text{)}_3\text{PO}_4$