For the Following Gas-Phase Bimolecular Elementary Reaction 2Cl^● → Cl₂ $-2 \frac{\mathrm{d}\left[\mathrm{Cl}^{*}\right]}{\mathrm{d} t}=k\left[\mathrm{Cl}^{*}\right]$

For the following gas-phase bimolecular elementary reaction 2Cl^● → Cl₂, which rate equation, expressed in terms of a differential, shows the relationship between the rate of consumption of reactant and rate of reaction?

A)
$-2 \frac{\mathrm{d}\left[\mathrm{Cl}^{*}\right]}{\mathrm{d} t}=k\left[\mathrm{Cl}^{*}\right]$
B)
$-2 \frac{d\left[\mathrm{Cl}^{.}\right]}{d t}=k\left[\mathrm{Cl}^{.}\right]^{2}$
C)
$-\frac{\mathrm{d}\left[\mathrm{Cl}^{.}\right]}{\mathrm{d} f}=k\left[\mathrm{Cl}^{.}\right]^{2}$
D)
$-\frac{d\left[\mathrm{Cl}^{.}\right]}{d t}=2 \times k\left[\mathrm{Cl}^{.}\right]^{2}$