Some geologists believe that if the average oil reserves per unit area in the unexplored area of the earth can be the same as the explored area, then the current correct estimate of the energy content of the underground unexploited will, therefore, multiply by 10,000 times From this, it can be concluded that global oil demand can be met for at least the next five centuries, even if such demand is increasing every year. In order for the above argument to be true, which of the following must be assumed? ? ['The total area of unexplored areas on Earth is 10,000 times that of explored areas.', "For at least the next five centuries, the growth rate of the world's population will not exceed the growth rate of demand for oil.", 'New technologies will make future exploration and extraction of oil more feasible than they are now.', 'Petroleum stored in unexplored areas on Earth can be surveyed and extracted.']