An Oxygen-15 Nucleus $\begin{array} { c } 15 \\8\end{array}$ O, Decays to Another Atomic Nucleus by Emitting a ?⁺

An oxygen-15 nucleus, $\begin{array} { c } 15 \\8\end{array}$ O, decays to another atomic nucleus by emitting a ?⁺ ray. What is the other atomic nucleus?

A) $\begin{array} { c } 15 \\7\end{array}$ N
B) $\begin{array} { c } 16 \\8\end{array}$ F
C) $\begin{array} { c } 15 \\6\end{array}$ C
D) $\begin{array} { c } 14 \\8\end{array}$ C
E) $\begin{array} { c } 17 \\7\end{array}$ N