Which of the following statements about Beta+ decay are correct? (There may be more than one correct choice.) During Beta+ decay
A. a proton is emitted from the nucleus.
B. the atomic number Z of the isotope increases by one unit but the atomic weight A remains unchanged.
C. a neutron in the nucleus decays to a proton and an electron.
D. a proton in the nucleus decays to a positron and a neutron.
E. an orbital electron is captured by the nucleus.