Which of the Following Is the Correct Order of the Mode-Of-Exposure

Which of the following is the correct order of the mode-of-exposure continuum-

A) imaginal, virtual reality, verbal and visual depictions, in vivo
B) virtual reality, in vivo, imaginal, verbal and visual depictions
C) in vivo, virtual reality, verbal and visual depictions, imaginal
D) verbal and visual depictions, imaginal, virtual reality, in vivo