Answer : B Carcinoid tumor
Crohn disease is a transmural, chronic inflammatory disease that may affect any part of the digestive tract but occurs principally in the distal small intestine and occasionally the right colon.
It has variously been referred to as terminal ileitis and regional ileitis when it involves the ileum and granulomatous colitis when it principally affects the colon.
Skip lesions are common. The affected mucosa has a characteristic “cobblestone” appearance (shown in the image) due to the presence of linear ulcerations and edema, and inflammation of the intervening tissue.
The other choices do not show the characteristic cobblestone morphology that is seen in this case.