Which of the following statement(s) about complete rectal prolapse, or procidentia is/are true?

A. Rectal prolapse results from intussusception of the rectum and rectosigmoid.

DISCUSSION: Rectal prolapse is believed to be the result of intussusception of the rectum and rectosigmoid. The condition predominates in women, in those who strain excessively, and in those suffering from mental disorders. Pregnancy and delivery are not implicated, as the condition can be observed in men and in nulliparous women. By the time the diagnosis i established, 50% of patients are incontinent, and continence improves in only half of the patients after surgical correction of the prolapse.