Radon $^{222}_{86}\text{Rn}$ begins a decay series that produces bismuth $^{214}_{83}\text{Bi}$ through $\alpha$ and $\beta^-$ emissions. During the decay of each radon nucleus, how many $\alpha$ particles and how many $\beta^-$ particles are emitted?
- A$\alpha$: $1$; $\beta^-$: $1$
- B$\alpha$: $2$; $\beta^-$: $1$
- C$\alpha$: $1$; $\beta^-$: $2$
- D$\alpha$: $2$; $\beta^-$: $2$