For the non-stoichiometric reaction 2A + B → C + D, the following kinetic data were obtained in three separate experiments, all at 298 K.

The rate law for the formation of C is

- dc/dt = k[A]
^{2}[B] - dc/dt = k[A]
- dc/dt = k[A][B]
- dc/dt = k[A][B]
^{2}

**Answer**

R = k[A]^{x}[B]^{y}

1.2 x 10^{-3} = k[0.1]^{x}[0.1]^{y}

1.2 x 10^{-3} = k[0.1]^{x}[0.2]^{y}

2.4 x 10^{-3} = k[0.2]^{x}[0.1]^{y}

Solving, x = 1, y = 0

R = k[A]

**The correct option is B.**