Select the nuclear equation that describes beta decay of an argon (Ar) nucleus to potassium (K).
- A$^{44}_{21}\text{Ar} \rightarrow ^{40}_{19}\text{K} + ^{4}_{2}\text{He}$
- B$^{40}_{20}\text{Ar} \rightarrow ^{40}_{19}\text{K} + ^{0}_{1}\text{e}$
- C$^{40}_{18}\text{Ar} \rightarrow ^{40}_{19}\text{K} + ^{0}_{-1}\text{e}$
- D$^{40}_{19}\text{Ar} \rightarrow ^{40}_{19}\text{K} + ^{0}_{0}\gamma$