A 46 year old male who has never been hospitalized is admitted for e. coli bacteremia treatment. On hospital day 4 you note this non-blanchable rash. He's been getting heparin 5000 IU TID and has never taken any medications. Platelets today are 120. On admission they were 205.

What should you do next:

A. Stop heparin, start direct thrombin inhibitor
B. Stop heparin only
C. Order HIT Antibody
D. Leave heparin, don't order any HIT tests