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