${ }_{35}^{79} \mathrm{Br}$ Has an Atomic Mass Of $78.918336 \mathrm{u}$ , And

Multiple Choice

${ }_{35}^{79} \mathrm{Br}$ has an atomic mass of $78.918336 \mathrm{u}$ , and ${ }_{.36}^{79} \mathrm{Kr}$ has an atomic mass of $78.920084 \mathrm{u}$ . Which is the correct decay process (or the likeliest if more than one is possible) ?

A) ${ }^{79} \mathrm{Kr} \rightarrow{ }^{79} \mathrm{Br}+v$
B) ${ }^{79} \mathrm{Kr} \rightarrow{ }^{79} \mathrm{Br}+\mathbf{e}^{-}+\bar{v}$
C) ${ }^{79} \mathrm{Kr} \rightarrow{ }^{79} \mathrm{Br}+e^{+}+v$
D) ${ }^{79} \mathrm{Br} \rightarrow{ }^{79} \mathrm{Kr}+e^{-}+\bar{v}$
E) ${ }^{79} \mathrm{Br} \rightarrow{ }^{79} \mathrm{Kr}+e^{+}+v$