Every time crude oil dropped more than 5%, some revisit the idea of US$40 per barrel or even lower. If you remember, the lowest price of crude is US$43 per barrel (WTI crude). In a relatively short period of time, the commodity rallied by more than 40% to reach US$60 per barrel. In the past few days, crude retreated closer to US$50 per barrel, which once again triggered many to ask, where is the bottom?To subscribe please click here