A 32-year-old female patient has called 9-1-1 because she has been vomiting blood. When you arrive, she appears weak and is lying on the couch. She has been sick with the flu for a week and tells you that the last time she threw up she saw blood in the bucket, which is beside the couch. She denies any pain or difficulty breathing other than feeling worn out from the flu. There are streaks of red blood in the bucket. She then vomits again, and more undigested blood is in her emesis. You suspect that she may have:

A) Esophageal varices
B) A perforated esophagus
C) An ulcer
D) Mallory-Weiss syndrome

Answer: D) Mallory-Weiss syndrome