Which Statement Best Describes a Neutron Star's Formation as a Supernova

Which statement best describes a neutron star's formation as a supernova explodes and the core begins to collapse inward?

A) neutrinos and antineutrinos combine into neutrons
B) electrons and protons combine into neutrons and neutrinos
C) Electrons and protons combine into neutrons and neutrinos
D) electrons and positrons combine into neutrons and neutrinos
E) protons and antiprotons combine into neutrons and neutrinos