x2−x1≤2x_2-x_1\le 2x2−x1≤2 x5−x3≤1x_5-x_3\le 1x5−x3≤1
x3−x1≤1x_3-x_1\le 1x3−x1≤1 x6−x5≤5x_6-x_5\le 5x6−x5≤5
x4−x2≤3x_4-x_2\le 3x4−x2≤3 x6−x4≤2x_6-x_4\le 2x6−x4≤2
x3−x2≤3x_3-x_2\le 3x3−x2≤3 x4−x5≤2x_4-x_5\le 2x4−x5≤2
Which of the following statement(s) is (are) correct.