using System;

using System.Collections.Generic;

using System.Linq;

​

class Program

{

    public static List<Car> Cars = new List<Car>();

    static void Main(string[] args)

    {

        DisplayDataFromFile();

    }

​

    private static void DisplayDataFromFile()

    {

        Cars = CarDataService.GetCars();

        List<string> carMakes = Cars.Select(c => c.Make).Distinct().ToList();

        Console.WriteLine("CARS MAKES:");

        foreach (var makes in carMakes)

        {

            Console.WriteLine($"Make: {makes}");

        }

    }

​

    public class Car

    {

        public int OwnerID

        {

            get;

            set;

        }

​

        public int Year

        {

            get;

            set;

        }

​

        public string Make

        {

            get;

            set;

        }

​

        public string Model

        {

            get;

            set;

        }

​

        public Car(int ownerID, int year, string make, string model)

        {

            OwnerID = ownerID;

            Year = year;

            Make = make;

            Model = model;

        }

    }

​

    public static class CarDataService

    {

        public static List<Car> GetCars()

        {

            return new List<Car>{new Car(1, year: 2002, make: "Hyundai", model: "Elantra"), new Car(2, year: 2003, make: "Hyundai", model: "Excel"), new Car(1, year: 2010, make: "Ford", model: "Escort"), };

        }

    }

}