Which of the Statements Below Would Not Support a Psychological

Which of the statements below would not support a psychological explanation for Holmes' crimes?

A) Holmes had abruptly quit the graduate program.
B) A psychiatrist had expressed concerns about Holmes's mental well­being to the school's threat assessment team.
C) Holmes was described as a silent loner who "always seemed to be off in his own world."
D) Holmes had recently visited a dentist.