What is the most likely reason that the red blood cell (RBC) count remains elevated in a newborn for the first 2 weeks of life?
A) A relative loss of plasma occurs during the birth process.
B) A significantly longer RBC life span increases the number of red cells in circulation.
C) Partial anoxia exists in utero, and erythropoietin increases.
D) The switch from fetal to adult hemoglobin causes number of red cells to increase.
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