question_answer

Five balls \[1,2,3,4,5\]are suspended side by side. The pair of balls \[(1,2),\] \[(1,4)\] and \[(2,5)\] attract each other whereas balls \[(2,3)\] and \[(4,5)\] repel each other. The ball number 1 must be:

A)  positively charged         

B)         negatively charged        

C)         neutral                               

D)         conductor