In the thorax, oesophagus is constricted where it is crossed by the
A
Arch of the aorta
B
Oesophageal opening of the diaphragm
C
Descending thoracic aorta
D
Right principal bronchus
E
Thoracic duct
Correct Answer: Arch of the aorta, Oesophageal opening of the diaphragm