The Rate Law using Initial Rates Data

The initial rate data for the decomposition of AB compound were shown at the table below.

[AB]^o (mol/L) Initial rate (mol/L.s)
0.2 3.2 x 10^{-3}
0.4 1.28 x 10^{-2}
0.6 2.88 x 10^{-2}

a. Rate = k
b. Rate = k [AB]
c. Rate = k [AB]^2
d. Rate = k [AB]^3
e. Rate = [AB]^4