Write code to print required output - Java Quiz Question

Which option will be placed in 'Write code here' then, produce the output 'Hello World'?

public class Computer {
    class HardDisk {

        //Write code here.

    }
    public static void main(String args[]) {
        new Computer().display();
    }
    void display() {
        new HardDisk();
    }
    void memory() {
        System.out.println("Hello World");
    }
}

	Computer.memory();
	this.memory();
	HardDisk() { Computer.memory(); }
	HardDisk() { Computer.this.memory(); }
	None of the above

Topic: Calling A Class From Another Class In Java

Read this topic
Take test on this topic

1	Room and Fan Class Composition
2	Room And Fan Output
3	Linked Classes
4	Write code to print required output
5	Classes inside the class1638
6	Adbul Kalam
7	Classes inside other class1990
8	Classes inside other class and Type casting
9	Room And Fan Output2505
10	Room And Fan Output2942
11	classes2944