Refer to the Reaction
Cr₂O₇^2-(aq) + 6 I^-(aq) + 14 $\rightarrow$

refer to the reaction
Cr₂O₇^2-(aq) + 6 I^-(aq) + 14 H⁺(aq) $\rightarrow$ 2 Cr³⁺(aq) + 3 I₂(aq) + 7 H₂O(l)
for which the following initial instantaneous rates of reaction were obtained.

-If the initial rate data are for the rate at which I^- disappears, -d(I^-) /dt, what would be the rate of disappearance of Cr₂O₇^2- in Trial 1?

A) 0.83 x 10^-4 M/s
B) 2.5 x 10^-4 M/s
C) 5 x 10^-4 M/s
D) 10 x 10^-4 M/s
E) 30 x 10^-4 M/s