Why have oil reserves proved a mixed blessing for Venezuela? Group of answer choices Venezuelan oil reserves proved much smaller than expected and quickly ran out Venezuela's dependence on oil profits meant that its economy did not diversify, limiting the country's ability to withstand shifts in global oil pricing American military intervention in the 1970s prevented Venezuelan nationalization of the industry and only multinational corporations profited on the oil Leaders of global markets shut out Venezuelan oil after Socialist Hugo Chavez became President in 1998