For the Hypothetical Reaction a → Products,the Concentration of a Was

For the hypothetical reaction A → products,the concentration of A was monitored over time.From the following graph,what is the rate constant for the decomposition of A?

A) -0.02735 s^-1
B) 2.3026 s^-1
C) -2.3026 s^-1
D) 0.02735 s^-1
E) 0.01188 s^-1