A 30 year old female patient presents with nonprogressive dysphagia, for both solids and liquids. The characteristic finding on barium swallow that will confirm the probable diagnosis is
Dilated esophagus with narrow lower end (Rat tail esophagus) Multiple sacculations and pseudodiveiculae (Corkscrew esophagus) Narrow and irregular esophageal lumen Stricture ulcer in the esophagus