Which Patient Is at the Greatest Risk for Septic Shock

Which patient is at the greatest risk for septic shock?

A) An 84 year old woman with a long term foley catheter, a stage four pressure ulcer on her coccyx and insulin dependent diabetes.
B) A 55 year old woman with pneumonia.
C) A 38 year old woman with asthma and status post day 2 appendectomy.
D) A 63 year old man who had bypass surgery two weeks ago.