Alpha Decay Produces a New Nucleus Whose Than Those Respectively

Multiple Choice

Alpha decay produces a new nucleus whose than those respectively of the original nucleus.

A) atomic number is 2 more and mass number is 4 more
B) atomic number is 2 less and mass number is 4 less
C) atomic number is 2 more and mass number is 2 less
D) atomic number is 2 less and mass number is 2 less
E) atomic number is 1 less and mass number is 2 less