Which Equation Is Used to Calculate the Half-Life of the Zero-Order

Which equation is used to calculate the half-life of the zero-order equation below? $\mathrm{A} \rightarrow 2 \mathrm{~B}$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$ rate $=k$

A) $t_{1 / 2}=\frac{1}{2 k}$
B) $t_{1 / 2}=\frac{[\mathrm{A}]_{0}}{k}$
C) $t_{1 / 2}=\frac{[A]_{0}}{2 k}$
D) $t_{1 / 2}=\frac{k}{[\mathrm{~A}]_{0}}$
E) t_1/2 = k