Attract or Repel?

There are four plates: \( A, \) \( B\) and \( D \) are charged plastic plates and \(C \) is an electrically neutral copper plate. The electrostatic forces between some pairs of the plates are as follows: \[ \begin{align} A \rightarrow & \leftarrow B \\ C \rightarrow & \leftarrow A \\ \leftarrow D \quad & \quad A \rightarrow \end{align}\] For the pair \( B \) and \(D,\) do the plates repel or attract each other?

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