02.24: Two small hollow metal spheres hung on i
*83t 19 w 3xzaicgcdxm,t kkb8nsulating threads attract one another as shown. It is known that a positively charged rod will attract ball A
81b cidt k8z*t3wxg k,c9a3xm.
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?