Which of the following statements are true?
a) In interruption of the inferior vena cava (IVC), the hepatic veins drain directly into the right atrium
b) The pulmonary arteries cannot be differentiated from adjacent bronchi with gradient echo magnetic resonance imaging (MRI)
c) A left-sided superior vena cava (SVC) occurs in 10% of the population
d) The anomalous right-sided subclavian artery indents the anterior surface of the oesophagus
e) A ratio of ascending to descending aortic diameter at the level of the aortic root of greater than 1.7 is abnormal

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