For the Reaction BrO₃^- + 5Br^- + 6H⁺ → 3Br₂

For the reaction BrO₃^- + 5Br^- + 6H⁺ → 3Br₂ + 3H₂O at a particular time, -Δ[BrO₃^-]/Δt = 1.5 × 10^{-2 M}/s. What is -Δ[Br^-]/Δt at the same instant?

A) 13 M/s
B) 7.5 × 10^{-2 M}/s
C) 1.5 × 10^{-2 M}/s
D) 3.0 × 10^-3 M/s
E) 330 M/s