Phosphorus-32, a Radioactive Isotope of Phosphorus-31 (Atomic Number 15), Undergoes

Phosphorus-32, a radioactive isotope of phosphorus-31 (atomic number 15) , undergoes a form of radioactive decay whereby a neutron turns into a proton and emits radiation in the form of an electron. What is the product of such radioactive decay of phosphorus-32?

A) phosphorus-31
B) a positively charged phosphorus-31 ion
C) a negatively charged phosphorus-32 ion
D) sulfur-32 (atomic number 16)
E) the conversion of the phosphorus-32 atom into pure energy