02.24: Two small hollow metal spher
a+: mn+o + l/zhlhgv8ges hung on insulating threads attract one another as shown. It is known that a posi
/g+:hm 8l h+n azl+gvotively charged rod will attract ball A.
I. Ball A has a positive charge
II. Ball B has a negative charge
III. Ball A and Ball B have opposite charges
Which of the above can be correctly concluded about the charge on the balls?