In June of 1973, an American family might have to wait in line for hours to fill their car up with gas. They were asked to turn their thermostat down and to not put up Christmas lights. These examples of forced and voluntary rationing were the result of Responses the regulation of the domestic oil industry in response to an EPA study the regulation of the domestic oil industry in response to an EPA study a rise in oil prices as the dollar was allowed to float freely against the price of gold a rise in oil prices as the dollar was allowed to float freely against the price of gold Russia refusing oil access in response to Nixon meeting with China's Mao Zedong Russia refusing oil access in response to Nixon meeting with China's Mao Zedong an oil embargo by OAPEC countries in response to the Yom Kippur War