2.下列藥品療程，何者最不適用於急性心肌梗塞病人的緊急治療？
(A)alteplase 15 mg IV bolus, 50 mg over 30 mins, then 35 mg over 60 mins
(B)aspirin 160 mg PO stat
(C)metoprolol 5 mg IV over 2 mins × 3 doses, 15 mins later 25～50 mg PO q6h
(D)nitroglycerin 5～10 µg/min IV infusion, titrate gradually up to 200 µg/min, and keep for 7 days