An Example of the Interplay of Physical and Psychological Causation

An example of the interplay of physical and psychological causation of erectile dysfunction is the case of a male

A) aged 60 whose diabetes causes erectile dysfunction which causes unhappiness.
B) aged 55 who has needed increasing penile stimulation with age, who has trouble getting an erection one night, and then starts having anxiety whenever he wants to have sex, causing erectile dysfunction.
C) aged 20 who fails to achieve an erection on a date because he is drunk.
D) aged l8 who has never had an erection.
E) All of the above