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In the figure, the inner region A represents a sphere of radius R(A)=1, within which the electrostatic charge density varies with the radial distance r from the center as roh(A)=kr, where k is positive. In the spherical shell B of outer radius R(B), the electrostatic charge density varies as roh(B)=(2k)/r. Assume that dimensions are taken care of. All physical quantities are in their SI units. Which of the following statement(s) is (are) correct?

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