Show the result of the following sequence of instructions: union(1,2),union(3,4),union(3,5),un ion(1,7),union(3,6),union(8,9),unio n(1,8),union(3,10),union (3,11),union(3,12),union(3,13),unio n(14,15),union(16,0),union(14,16),u nion (1,3),union(1, 14)when theunionsarea. performed arbitrarilyb. performed by heightc. performed by size