A Consequence of the Fact That Erection Can Be Mediated

A consequence of the fact that erection can be mediated by a spinal reflex is that

A) men paralyzed with high-level spinal injuries can still get erections.
B) direct stimulation of the penis can sometimes cause erection no matter what a man is thinking.
C) erection can occur when a man sees an attractive partner.
D) Both a and b
E) All of the above