The unstable nuclide $^{218}_{84}X$ undergoes a decay chain involving the emission of $\alpha$ and $\beta^-$ particles until the stable nuclide $^{210}_{83}Y$ is produced. How many $\alpha$ and $\beta^-$ particles are released in this decay process?
- A$\alpha$: 1, $\beta^-$: 1
- B$\alpha$: 2, $\beta^-$: 1
- C$\alpha$: 2, $\beta^-$: 3
- D$\alpha$: 3, $\beta^-$: 2