The correct answer is C; colitis or gastroenteritis.
Further Explanation:
When a patient is complaining of inflammation of his digestive tract and pain in his abdomen it could either be colitis or gastroenteritis. Both of these have similar symptoms and both have symptoms of inflammation. Medication can help ease the symptoms.
Periodontal disease is in the mouth and any type of cancer must be diagnosed by a doctor via imaging tests and blood work.