At separation distance \(r_{1}\), charged Ping-Pong balls \(A\) and \(B\) repel each other with an electric force of magnitude 0. 40 N. At separation distance \(r_{2}\), charged Ping-Pong balls \(\mathrm{A}\) and \(\mathrm{C}\) repel each other with a force of magnitude 1. 4 N. Maintaining the separation distances \(r_{1}\) and \(r_{2}\), how should you arrange B and C around A \((a)\) to create the maximum electric force exerted on \(\mathrm{A}\) and \((b)\) to create the minimum electric force exerted on A?