A 72-Year-Old Man Is Brought into the Hospital by Paramedics After

A 72-year-old man is brought into the hospital by paramedics after he was found disoriented and wandering in the street.  He has a past medical history of dementia, hypertension, and stroke.  Physical examination reveals a disoriented, thin-appearing male.  His gingivae are swollen and bleed easily.  Ecchymoses are noted on his legs.  The laboratory values are provided below: Which of the following is most likely responsible for this patient's ecchymoses?

A) Platelet dysfunction
B) Endothelial cell dysfunction
C) Hepatic dysfunction
D) Water soluble vitamin deficiency
E) Fat soluble vitamin deficiency
F) Zinc deficiency

Correct Answer:

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