Fluid Velocity and Cross-Sectional Area in Blood Vessels

A cylindrical blood vessel has a radius of 1 mm and is partially filled with a non-viscous fluid. As the fluid moves, it is observed that the speed of the fluid is highest at the center and decreases towards the walls of the vessel. According to the principle of conservation of mass for incompressible fluids (continuity equation), which of the following statements best describes the relationship between the cross-sectional area of flow and the velocity of the fluid?