Regarding POEMS syndrome, which of the following are true or false? a) Organomegaly is described as a feature but rare in POEMS syndrome b) Patients usually have a severe, progressive sensorimotor polyneuropathy c) Type 2 diabetes mellitus occurs in about one-third of patients d) Amenorrhea in women and impotence and gynecomastia in men is seen e) The lymphadenopathy although rare, resembles Castleman's disease histologically