A trauma surgeon informs you that the patient you transported to the emergency department earlier was diagnosed with an epidural hematoma. The patient was taken into surgery and the hematoma was removed. Right now the patient is in guarded condition. Based on this information, the AEMT should recognize that an epidural hematoma is:

A) blood from a ruptured artery forming a hematoma within a section of brain tissue.
B) a pocket of arterial blood collected between the skull and dura mater.
C) blood from a ruptured vein collected between the dura mater and brain tissue.
D) cerebral spinal fluid accumulated in a pocket on top of the brain tissue.

B