The diagram illustrates the paths taken by three different kinds of radiation, X, Y and Z. Which row identifies X, Y and Z correctly?
- A$\alpha$-particles; $\beta$-particles; $\gamma$-rays
- B$\beta$-particles; $\alpha$-particles; $\gamma$-rays
- C$\beta$-particles; $\gamma$-rays; $\alpha$-particles
- D$\gamma$-rays; $\alpha$-particles; $\beta$-particles