A non-conducting hollow cylinder has a uniform volume charge density of 1.2 c/m3. The inner radius of the cylinder is 0.25 m, while the outer radius is 0.35 m. Calculate the magnitude of the electric field at r = 0.32 m. A 2.7×109 N/C B 1.3×1010 N/C C 4.3×109 N/C D 2.2×1010 N/C E 8.5×109 N/C