A certain reaction `A rarrB` follows the given concentration (molarity) - time graph. Which of the following statement is true?

Options

A. The reaction is of second order with respect to A
B. The rate for this reaction at 40 second will be approximately `3.5xx10^(-3)Ms^(-1)`
C. The rate for this reaction at 80 second will be `1.75xx10^(-3)Ms^(-1)`
D. The [B] will be 0.25 M at 60 second

Answer

B