Which of the following expressions is true if the expression G < R ≤ X > A > B ≥ K is definitely true?

G < R ≤ X > A > B ≥ K                        No relation can be established between G and K. Hence option 1 is not correct. G < R ≤ X > A > B ≥ K                        No relation can be established between G and A. Hence option 2 is not correct. G < R ≤ X > A > B ≥ K                        No relation can be established between B and G. Hence option 3 is not correct. G < R ≤ X > A > B ≥ K                        A > K. Hence option 4 is correct. G < R ≤ X > A > B ≥ K                        No relation can be established between B and R. Hence option 5  is not correct.