Per EW principles, wave 4 never goes down to wave 1 range. As you can see on the chart, point A is almost touch on wave 1 range. If it's a,b,c correction, c should go lower than a, and then c would go down to wave 1 range, which violates EW principles. So it should be a,b,c,d,e correction. @haejin, please correct me if i'm wrong.