Complete the Following Nuclear Equation: ?? $\begin{array} { c } 218\\85\end{array}$

Multiple Choice

Complete the following nuclear equation: ?? ? $\begin{array} { c } 218\\85\end{array}$ At + $\begin{array} { c } 0 \\- 1\end{array}$ e

A) $\begin{array} { c } 226 \\88\end{array}$ Ra
B) $\begin{array} { l } 222 \\85\end{array}$ At
C) $\begin{array} { c } 218\\84\end{array}$ Po
D) $\begin{array} { c } 222\\86\end{array}$ Rn
E) none of the above