For Each of the Following Unbalanced Equations,which Is Depicted: Oxidation $\mathrm { Cr } ^ { 3 + }$

Multiple Choice

For each of the following unbalanced equations,which is depicted: oxidation or reduction? a) Cr ? $\mathrm { Cr } ^ { 3 + }$ b) Sn ? $\mathrm { Sn } ( \mathrm { OH } ) 4 ^ { 2 - }$

A) a) oxidation; b) reduction
B) a) reduction; b) oxidation
C) a) reduction; b) reduction
D) a) oxidation; b) oxidation