What, If Any, Is the Difference Between Subdural Hematoma and Epidural

What, if any, is the difference between subdural hematoma and epidural hematoma?

A) There is no difference. These terms may be used interchangeably.
B) A subdural hematoma occurs above the dura, whereas an epidural hematoma occurs under the dura.
C) A subdural hematoma usually is formed from venous blood that collects slowly, whereas an epidural hematoma is formed from arterial blood that collects rapidly.
D) A subdural hematoma usually forms from bleeding within the skull such as an aneurysm eruption, whereas an epidural hematoma occurs from trauma outside the skull such as a blunt force trauma.