A 40 year old female patient presents with dysphagia to both liquids and solids and regugitation for 3 months.The dysphagia was non progressive.What is the most likely diagnosis ?

• A. Lower esophagus mucosal ring
• B. Carcinoma of the esophagus
• C. Reflux esophagitis with esophageal stricture
• D. Achalasia cardia