Five Styrofoam balls are suspended from insulating threads. Several experiments are performed on...

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Five Styrofoam balls are suspended from insulating threads. Several experiments are performed on the balls and the following observations are made:
(i) Ball A repels \( \mathrm{C} \) and attracts \( \mathrm{B} \).
(ii) Ball D attracts B and has no effect on E.
(iii) A negatively charged rod attracts both \( A \) and \( E \).
An electrically neutral Styrofoam ball gets attracted if placed nearby a charged body due to induced charge. What are the charges, if any, on each ball \( A, B, C, D \), and \( E \) ?
(1) \( ++-+\mathrm{O}+ \)
(2) \( +-++\mathrm{O} \)
(3) \( +-+\mathrm{OO} \)
(4) \( -+-\mathrm{OO} \)
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