In which of the following circumstances would external bleeding be the LEAST difficult to control?
A: Lacerated brachial artery; BP of 140/90 mm Hg
B: Lacerated carotid artery; BP of 90/50 mm Hg
C: Lacerated jugular vein; BP of 100/60 mm Hg
D: Lacerated femoral vein; BP of 70/40 mm Hg
Answer: D: Lacerated femoral vein; BP of 70/40 mm Hg
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