A medical student is familiarizing herself with recent overnight admissions to an acute medical unit ...

A medical student is familiarizing herself with recent overnight admissions to an acute medical unit of a university hospital.
 
  Which of the following patients would the student recognize as least likely to have a diagnosis of antiphospholipid syndrome in his or her medical history?
  A)
  A 66-year-old obese male with left-sided hemiplegia secondary to a cerebrovascular accident
  B)
  A 90-year-old female resident of a long-term care facility who has been experiencing transient ischemic attacks
  C)
  A 30-year-old female with a diagnosis of left leg deep vein thrombosis and a pulmonary embolism
  D)
  A 21-year-old male with a diagnosis of cellulitis and suspected endocarditis secondary to intravenous drug use