Let A,B,C,D,EA,B,C,D,EA,B,C,D,E be decision problems. We denote a polynomial time reduction with the symbol "≤p\le_p≤p". Suppose that A≤pBA \le_p BA≤pB, B≤pCB \le_p CB≤pC, C≤pDC \le_p DC≤pD, and C≤pEC \le_p EC≤pE. We also assume A∈PA \in PA∈P and B∈NPB \in NPB∈NP. Select all correct statements below.