At present, the average fuel consumption per 100 kilometers of automobiles in China is more than 20% higher than in developed countries. Studies have shown that diesel vehicles consume 20% to 30% less fuel than gasoline vehicles. In the case of serious emissions from automobiles, advanced development Diesel vehicles can not increase or reduce emissions of automobile pollutants. The proportion of diesel vehicles in China's car ownership is 23.7%, and the proportion of car ownership is only 0.2%. Assume that China's diesel vehicles are in passenger use in 2020. The proportion of car insurance usage is 30%, and the corresponding proportion of total car ownership is 39.7%, so 28.37 million tons of crude oil can be saved in 2020. Which of the following options best support the above diagnosis: (). ['Different tax rates may be adopted for gasoline and diesel to make diesel prices lower than gasoline.', 'Encourage more people to use energy-saving products such as diesel cars.', 'Diesel fuel quality standards should be improved, and price supervision methods should be used to encourage the production of high-quality diesel.', 'Enhance the independent innovation capability of advanced diesel technology and develop advanced diesel vehicles.']