A. passing a guide wire through one of the external jugular veins to directly visualize an occluded coronary artery. B. using a large vein from one of the lower extremities to reroute blood flow past an occluded coronary artery. C. recanalizing a blocked coronary artery by passing a balloon or stent through a catheter via a peripheral artery. D. passing a 2-mm catheter through the femoral artery and administering a fibrinolytic agent through the catheter.