Because of the High Incidence of Myocardial Infarctions Related to Thrombus

Because of the high incidence of myocardial infarctions related to thrombus formation, anticoagulants and Thrombolytic Therapy is considered to be standards of care in the treatment of acute myocardial infarction. When should Thrombolytic Care be started in the patient suspected of having a myocardial infarction?

A) Within one hour of onset of symptoms
B) Within 4 hours of onset of symptoms
C) Within 9 hours of onset of symptoms
D) Within 12 hours of onset of symptoms