A 55-year-old man on ICU has a DVT and starts therapeutic enoxaparin. Four days later, his platelet count drops from 190 to 85 × 10⁹/L. The 4Ts score is 5 (intermediate probability for HIT). What is the next step?AContinue enoxaparin and monitorBSTOP all heparin (including LMWH - HIT can be caused by both UFH and LMWH), send HIT antibody testing (ELISA), and start a non-heparin anticoagulant (argatroban or fondaparinux) while awaiting results - do NOT wait for HIT confirmation before switching anticoagulationCGive platelet transfusionDSwitch to UFHEStop anticoagulation entirely without replacementCheck my answer