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Fuel Economy, A fuel economy study was carried out for five models of cars. Each car was driven 100 miles, and then the model of the car and the number of gallons sued were placed in a line of the file Mileage.txt Table 7.22 shows the data for the entries of the file. Write a program to mileage. See Fig 7.81 The program should utilize an array of structures with upper bound 4, where each structure has three members. The first member should record the name of each model of car. The second member should record the number of test vehicles for each model