After the two variables are declared and initialized, which java instruction will set the value of b to true?

NaturalNumber n = new NaturalNumber2( );
NaturalNumber k = new NaturalNumber2(1);
1) Boolean b = k.compareTo(n) == 1;
2) boolean b = n.compareTo(k) < 0;
3) boolean b = n ≤ k;
4) boolean b = n.!equals(k);