Question

Five balls numbered 1 to 5 are suspended using
separate threads. Pairs (5, 3), (3, 4) and (4, 5) show
electrostatic attraction, while pairs (2, 3) and (4, 1)
show repulsion. Therefore ball 5 must be
A. Positively charged
B. Negatively charged
Neutral
D. Cannot be determined.​

Answer 1

Answer:

negatively charged

I think it is only correct