question: An individual of age 40 yrs presents with dysphagia to both solids and liquids with symptoms of regurgitation. Patient also complaints of chest pain and weight loss. Which of the following is the preferred investigation for diagnosis of this pathology?
opa: Barium swallow X-ray
opb: Barium swallow X-ray with esophageal manometry
opc: Barium swallow X-ray woith esophageal manometry with endoscopy
opd: None of the above