H 3 PO 2 (aq) + 2CuSO 4 (aq) + 2 H 2 O(l) → H 3 PO 4 (aq) + 2Cu(s) + H 2 SO 4 (aq) What is the inference about the behavior of Cu 2+ ions from this reaction?

Options

1. ACu 2+ ions are easily reduced to Cu(s)
2. BCu 2+ ions are oxidizing agents
3. CCu 2+ ions are inert in aqueous solutions
4. DCu 2+ ions form complex ions with H 3 PO 2