A 35 Year Old Mechanic Was Experiencing Excruciating Bouts of Bloody

A 35 year old mechanic was experiencing excruciating bouts of bloody diarrhoea.He consulted his local physician,who recommended partial colectomy in order to control the bleeding.A representative section of the specimen is shown in the accompanying low power photomicrograph.Which one of the following is the most likely diagnosis?

A) Adenocarcinoma
B) Crohn's disease
C) Giardia lamblia
D) Peptic ulcer disease
E) Ulcerative colitis