The nurse is caring for a client who suffers from frequent blood clots and currently taking argatroban (Hospira). Which of the following conditions in the client's medical history would require them to take argatroban (Hospira)?

A. Argatroban is specifically indicated for patients with heparin-induced thrombocytopenia (HIT), as it is a direct thrombin inhibitor that does not cause further platelet depletion. B. Myocardial infarction is treated with different classes of anticoagulants or antiplatelet medications, not specifically argatroban. C. Gastrointestinal bleeding would generally be a contraindication to anticoagulation therapy rather than an indication for argatroban use. D. Hepatotoxicity could be a concern when using argatroban, especially as it is metabolized in the liver, but it does not indicate a need for this medication.