<prompt> Pt with complains of dysphagia can take liquid only and history of smoking and weight lossAchalasia cardiaBarrets esophagusCarcinoma esophagusNone  <response>: Answer- C. Carcinoma esophagus History of smoking - A risk factor for esophageal carcinoma.Dysphagia for solid food as patient can take only liquid - Symptom of carcinoma esophagusDysphagia more for solid than liquids occurs in :carcinoma esophagusStrictures and webs 