For the Reaction Shown Below,what Is the Relationship Between the Rate

For the reaction shown below,what is the relationship between the rate of formation of Br₂ and the rate of reaction of Br^- over the same time period?
ClO₂^-(aq) + 4 Br^-(aq) + 4 H⁺(aq) → Cl^-(aq) + 2 Br₂(aq) +2 H₂O(l)

A) rate of formation of Br₂ = 1/2 × rate of reaction of Br^-
B) rate of formation of Br₂ = 1/4 × rate of reaction of Br^-
C) rate of formation of Br₂ = 2 × rate of reaction of Br^-
D) Rate of formation of Br₂ = 2 × rate of reaction of Br^-