Consider the following ShadowError class. When the main method is executed, the program prints 0. Which of the following statements best explains this behavior?

public class ShadowError {
    int counter = 0;
    
    public void increase() {
        for (int i = 0; i < 5; i++) {
            int counter = 0;
            counter += i;
        }
        System.out.println(counter);
    }
    
    public static void main(String[] args) {
        ShadowError s = new ShadowError();
        s.increase();
    }
}