The reaction equation for aluminium and copper(II) oxide is given below. $2\text{Al} + 3\text{CuO} \rightarrow \text{Al}_2\text{O}_3 + 3\text{Cu}$ Which of the following statements about this equation are correct?
- A1, 2 and 3
- B1 and 2 only
- C3 and 4
- D4 only