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5) The cross section of a long coaxial cable is shown in the figure, with radii as given. The linear charge density on the inner conductor is -237 nC/m and the linear charge density on the outer conductor is 238 nC/m. The inner and outer cylindrical surfaces are respectively denoted by A. B. C. and D. as shown. (80 - 8.85 x 10- 12 C2/N . m2) What is the magnitude and direction of the electric field at a point that is 49.5 mm from the axis? 28 mm 30 mm 49 mm -51 mm