In the decay sequence

$$X_1, X_2, X_3 and X_4$$ are particles/radiation emitted by the respective isotopes. The correct option(s) is(are)

A

$$x_1$$ will deflect towards negatively charged plate

B

$$x_2 is \beta^-$$

C

$$x_3 is \gamma$$-ray

D

Z is an isotope of uranium