I initially wanted to seat for control systems, but a friend of mine who wrote his exam before me explained that the control systems was very tough, he said they bought questions on Laplace transform, stable and unstable systems with diagrams on feed back control systems, open and close systems. Omo, i tear race straight, cos these things i didn't prepare, i only prepared for instrumentation. So I gergerly, went and wrote Energy systems. But I thank God, whatever will be will be. If God say na my time, then na my time. I wish you all the best.