Which of the following is (are) true about dark pools? I. Because the lack of transparency traders in dark pools are vulnerable to predatory trading practices by some high-frequency traders Il. Large traders use dark pools to avoid moving price against them. IlI. Trades made through dark pools do not publicly display orders V. Dark pools are alternative trading systems (ATS) O I, II, Ill and IV O I, Il and I II, III and IV 0 l, lll and IV