Radiology Left border of heart on chest X–ray is formed by -a) Aortic archb) Left Pulmonary arteryc) Right atriumd) Left ventriclee) Right ventricle A b B c C ac D ad 💡 Explanation Left border of heart on chest X–ray is formed by -a) Aortic archb) Left Pulmonary arteryc) Right atriumd) Left ventriclee) Right ventricle ✓ Correct Answer: D. ad