Which of the Following Statements Concerning Neutron Activation Analysis Is/are

Which of the following statements concerning neutron activation analysis is/are CORRECT?
1) In neutron activation analysis,a neutron is ejected from an atom creating a new isotope that is one mass unit lower.
2) Neutron activation analysis is destructive,but requires less than 1 g of sample.
3) Neutron activation analysis creates isotopes in the excited state that emit gamma rays to return to the ground state.

A) 1 only
B) 2 only
C) 3 only
D) 2 and 3
E) 1,2,and 3