Attract or Repel?

Electricity and Magnetism Level 1

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: $\begin{aligned} A \rightarrow & \leftarrow B \\ C \rightarrow & \leftarrow A \\ \leftarrow D \quad & \quad A \rightarrow \end{aligned}$ For the pair $B$ and $D,$ do the plates repel or attract each other?