Java | TreeMap CIP | Question 7

What is the output of ,

import java.util.*;

class HelloWorld {

    public static void main(String[] args) {

      TreeMap<Integer, String> m = new TreeMap<Integer, String>();

      m.put(10, "gfg");

      m.put(16, "IDE");

      m.put(25, "courses");

      System.out.println( m );

      for( Map.Entry<Integer, String>e:m.entrySet() )

        System.out.println( e.getKey() + " " + e.getValue() );

    }

}

(A)

(B)

(C)

(D)