If a Nucleus Decays by Successive $\alpha$ $\beta$ $\beta$ Particle Emissions,its Atomic Number Will
A) Decrease by Four

If a nucleus decays by successive $\alpha$ , $\beta$ , $\beta$ particle emissions,its atomic number will

A) decrease by four.
B) decrease by two.
C) increase by four.
D) increase by two.
E) be unchanged.