02.24: Two small holl
l3/k4qij1 ht o5lukb4ow metal spheres hung on insulating threads attract one another as shown. It is known that a positively cha
j14q kb hi4ukl53t/ lorged 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?