These actions are carried out when preparing solid magnesium sulfate. 1. filtration 2. measuring $20\,\text{cm}^3$ of dilute sulfuric acid with a measuring cylinder 3. evaporation 4. adding an excess of solid magnesium carbonate to dilute sulfuric acid What is the correct order for these actions?
- A$2 \rightarrow 4 \rightarrow 3 \rightarrow 1$
- B$2 \rightarrow 4 \rightarrow 1 \rightarrow 3$
- C$4 \rightarrow 2 \rightarrow 1 \rightarrow 3$
- D$4 \rightarrow 2 \rightarrow 3 \rightarrow 1$