In the reation

$$MnO_4^- + 16H^{+} + 10Br^{-} \rightarrow 2Mn^{2+} + 8H_{2}O + 5Br_{2}$$

$$Br^{-}$$ion is the

A

Oxidizing agent and is oxisized

B

Oxidizing agent and is reduced

C

Reducing agent and is oxidized

D

Reducing agent and is reduced