A 35-year-old roofer is examined in the emergency department after falling two stories and landing abdomen first on a barrel. Examination reveals weakness and loss of pain and temperature sensation in the left and right lower limbs. A magnetic resonance image indicates thrombosis of an artery in the abdomen. Which of the following arteries is most likely involved?
A) Anterior spinal B) Abdominal aorta C) Anterior radicular D) Posterior spinal E) Posterior radicular