What isotope is a product of this nuclear decay

A radioactive isotope of carbon, carbon-14, is used in the dating of ancient organic remains. Carbon-14 emits beta radiation as it undergoes nuclear decay. What isotope is a product of this nuclear decay?

A. boron-11
B. beryllium-14
C. carbon-12
D. nitrogen-14

Beta decay is the emission of a electron. that electron comes from the splitting on a neutron. The result is an atom with the same atomic mass, but with one new proton. Thus, you could have N-14.

Beta decay involves converting one neutron to a proton and ejecting an electron.
The result still has 14 mass units but is one higher up the periodic table.
I don't have one handy but the element will have 7 protons and 14 mass units.
Unlike carbon with 6 protons and ( in this example) 14 mass units.

which beta radiation, because are there not three, unless this is a high level of physics then i dont know