If the Partial Pressure of Oxygen (PO₂) in a Man's

If the partial pressure of oxygen (pO₂) in a man's blood plasma decreased below that in his red blood cells, what would be the result?

A) More oxygen would diffuse into his red blood cells and be transported throughout his body.
B) Oxygen would diffuse out of his red blood cells, and less oxygen would be transported throughout his body.
C) The concentration of oxygen would be the same in red blood cells and blood plasma.