In the decay shown by this equation, what shows that transmutation has taken place?

HC - "Be

A. Atomic identity changes, but the total number of protons and

neutrons does not.

B. The total number of nucleons changes between the parent and

daughter nuclei.

C. The elements represented by the parent and daughter nuclei are

the same

D. Atomic identity stays the same, but the total number of protons

and neutrons changes.