During a follow-up phone call with a patient, the oncology pharmacist finds the patient had experienced nausea and vomiting about 48 hours after receiving chemotherapy in the infusion center. How should this patient's chemotherapy-induced nausea and vomiting be classified?
a) Acute-onset, anticipatory
b) Delayed-onset, acute
c) Delayed-onset, delayed
d) Acute-onset, delayed