Match List I (Oxidation number) with List II (The element) and select the correct answer using the codes given below the lists: List I (Oxidation number) — List II (The element) A. 2 — 1. Oxidation number of Mn in MnO₂ B. 3 — 2. Oxidation number of S in H₂S₂O₇ C. 4 — 3. Oxidation number of Ca in CaO₂ D. 6 — 4. Oxidation number of Al in NaAlH₄

1. (a)A-3, B-4, C-1, D-2
2. (b)A-4, B-3, C-1, D-2
3. (c)A-3, B-4, C-2, D-1
4. (d)A-4, B-3, C-2, D-1