Question on: JAMB Chemistry - 1992

MnO2 + 2CI- + 4H+ → MnO2+ + CI2 + 2H2O.
The changes is oxidation numbers when the manganese, chloride and hydrogen ions react according to the above equation are respectively?
A
2, 2, 4
B
-1, -2, 4
C
-2, 1, 0
D
2, 4, 0
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Correct Option: C

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