Kayla is studying the oxygen use by the livers of seals. She detected a 4 kPa partial pressure of oxygen in liver tissue fluid. What partial pressure of oxygen in a capillary would be required to allow a net inflow of oxygen into the liver fluid?
A. 5 kPa
B. 1 Kpa
C. 2 kPa
D. 4 kPa
E. 3 kPa