Which line correctly implements the createUnitCircle method to return a Circle with radius 1?

public class Circle {
    double radius;
    
    public Circle(double radius) {
        this.radius = radius;
    }
    
    public static Circle createUnitCircle() {
        // Missing line: Return a new Circle object with radius 1.
    }
    
    public void printRadius() {
        System.out.println("Radius: " + radius);
    }
    
    public static void main(String[] args) {
        Circle c = Circle.createUnitCircle();
        c.printRadius();
    }
}