please answer the question below

Fluxand nonconductingshelis.A charged particle is suspended at the center of two concentric spherical shells that are very thin and made of nonconducting material. Figure in} shows a cross section. Figure {b} gives the netux CDthrough a Gaussian sphere centered on the particle, as a function of the radius r of the sphere.The scale of the vertical axis is set by CD; = 5.0 X 105 N-mEIC. (a) What is the charge of the central particle? What are the net charges of [hi shellA and [cl shell B? B A r (a) {a} Number n Units V [bl Number n Units . V. [cl Number n Units - V