14 y/o girl after a camping trip near Duke University in North Carolina presents with fever, headache, myalgia, has a rash beginning on extremities, wrists, ankles, palms, and soles & spreads up the trunk but spares the face. Lab: moderate thrombocytopenia & hyponatremia. What is the diagnosis and treatment?

a) Lyme disease; Doxycycline
b) Rocky Mountain spotted fever; Doxycycline
c) Kawasaki disease; High-dose aspirin and IV immunoglobulin
d) Scarlet fever; Penicillin