Attract or Repel?

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

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