The side of the head with an antique desk lamp

A 17-year-old amateur detective is brought to the emergency room after being hit in the side of the head with an antique desk lamp. The patient undergoes an emergent CT scan, shown below.

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The most likely diagnosis:

A) Subdural hematoma

B) interventricular hemorrhage

C) Subarachnoid hemorrhage

D) Epidural hematoma

E) Brain mass

D) Epidural hematoma