Which of the Following Would Be Part of an in Vivo

Which of the following would be part of an in vivo desensitization intervention used to treat a client's fear of flying?

A) having the client read a book about how airplanes are built
B) showing the client a movie about the precautions taken by all airlines to ensure passenger safety
C) showing the client dozens of film clips of airplane crashes
D) having the client picture him or herself piloting a jet plane
E) having the client sit in an airplane that is parked inside a hanger for maintenance