The reactions of three metals and their oxides are shown below. The table indicates whether each metal reacts when dilute hydrochloric acid is added to it, and whether each metal oxide reacts when heated with carbon. (✓ = reacts, x = does not react) What is the order of reactivity of these metals, starting with the most reactive and ending with the least reactive?
- A1 → 2 → 3
- B1 → 3 → 2
- C2 → 1 → 3
- D2 → 3 → 1