Which of the Following Best Demonstrates the Process of Self-Selection

Which of the following best demonstrates the process of self-selection?

A) An applicant posts his/her resume on an online job bulletin board.
B) While at a job fair, an applicant decides to interview with the ABC Company.
C) An applicant is asked to return for a second interview with the ABC Company.
D) An applicant asks a friend for advice on which companies to apply to.
E) An applicant calls ABC Company to check whether or not s/he has been selected.