A fluid with viscosity n is flowing upward through a tube (from A to B) with constant cross-sectional area. Both the effect of viscosity of the fluid, and the effect of gravity are important. The height difference between B and A is h. Determine which of the following statements about Ap = pg - p, are correct. L. Ap may be positive or negative depending on the viscosity and h. Il. Magnitude of Ap would increase as h increases if the flow rate remains the same. Ill. Magnitude of Ap would increase to maintain the same flow rate if the viscosity increased