Two uncharged balloons are suspended by threads a short distance apart. After each balloon is rubbed with a soft cloth, they repel each other as shown in the diagram. Which statement is true about the charges on the balloons after being rubbed?

X has a negative charge, Y has a negative charge.

X has a negative charge, Y is uncharged.

X has a positive charge, Y has a negative charge.

X is uncharged, Y has a positive charge.

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