A reaction $\mathrm{A}\to \mathrm{products}$ with $[\mathrm{A}{]}_0=1.000\mathrm{M}$ gave $[\mathrm{A}]=0.6065,0.3679,0.1353\mathrm{M}$ at $t=10,20,40\min$ respectively. Select the correct statements (use $\ln 2=0.693$).

1. AThe data are consistent with first order kinetics.
2. B$k=0.050\mathrm{mi}{\mathrm{n}}^{-1}$.
3. CThe half-life is $20\min$.
4. DThe instantaneous rate at $t=20\min$ is $0.0184\mathrm{M}\mathrm{mi}{\mathrm{n}}^{-1}$.