The Patient Who Experienced a TIA Is Prescribed Warfarin (Coumadin)and

The patient who experienced a TIA is prescribed warfarin (Coumadin) and has laboratory reports reflecting a therapeutic range for that drug that are:

A) Prothrombin time (PT) , 35 seconds; control (normal) , 20 seconds; international normalized ratio (INR) ,
B) Partial thromboplastin time (PTT) , 30 seconds; control (normal) , 30 seconds
C) PT, 45 seconds; control (normal) , 20 seconds; INR, d
D) PTT, 52 seconds; control (normal) , 30 seconds.