The Graph Represents the First-Order Decomposition of N₂O₅(g)to Form NO₂(g)and

The graph represents the first-order decomposition of N₂O₅(g) to form NO₂(g) and O₂(g) .
N₂O₅(g) → 2NO₂(g) +1/2O₂(g)
What is the estimated rate constant?

A) 0.28 hr^-1
B) 0.70 hr^-1
C) 0.58 hr^-1
D) The data is insufficient to calculate rate constant.