When Blood Is Present from a Traumatic Lumbar Puncture or There

When blood is present from a traumatic lumbar puncture or there is bleeding within the CNS, how is the CSF protein level corrected for the amount of blood present?

A) subtracting 1 mg/dL of protein for every 2000 RBCs per mm³
B) subtracting 2 mg/dL of protein for every 1000 RBCs per mm³
C) subtracting 1 mg/dL of protein for every 1000 RBCs per mm³
D) subtracting 2 mg/dL of protein for every 2000 RBCs per mm³