When Looking at the Historical Evolution of Attitudes Towards Psychological

When looking at the historical evolution of attitudes towards psychological disorders, general paresis is a disease with great significance because it:

A) demonstrated how psychological factors can create physical symptoms that have no identifiable biological cause.
B) provided the first evidence supporting the vulnerability-stress model.
C) provided the first evidence of a psychological disorder with a biological cause.
D) showed how psychological factors can produce actual physical abnormalities.