SQLD 프로그래밍 언어 활용 기출문제 #2439

다음 Java 프로그램의 실행 결과는?

Java
abstract class Vehicle {
    String brand = "Generic";
    abstract void start();
    void display() { System.out.print(brand + " "); }
}
class Car extends Vehicle {
    String brand = "Toyota";
    void start() { System.out.print("Engine "); }
}
public class Main {
    public static void main(String[] args) {
        Vehicle v = new Car();
        v.display();
        v.start();
    }
}

① Generic Engine ② Toyota Engine ③ Generic ④ Toyota