The superior vena cava is formed by the merging of the ________ veins, while the inferior vena cava is formed by the merging of the ________ veins.
A. internal jugular; external iliac
B. subclavian; femoral
C. external jugular; internal iliac
D. pulmonary; great saphenous
E. brachiocephalic; common iliac
Answer: E
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