During the kinetic study of the reaction, $2A + B \to C + D$, following results were obtained:

| Expt | [A] (M) | [B] (M) | Initial rate (M/s) |
|---|---|---|---|
| I | 0.1 | 0.1 | $6.0 \times 10^{-1}$ |
| II | 0.3 | 0.2 | $7.2 \times 10^{-1}$ |
| III | 0.3 | 0.4 | $28.8 \times 10^{-1}$ |
| IV | 0.4 | 0.1 | $24.0 \times 10^{-1}$ |

Based on the above data which one of the following is correct?