{(2,3),(3,4),(4,5)}\{(2, 3), (3, 4), (4, 5)\} {(2,3),(3,4),(4,5)}
{(1,2),(2,3),(3,4)}\{(1, 2), (2, 3), (3, 4)\} {(1,2),(2,3),(3,4)}
{(3,4),(3,5),(3,6)}\{(3, 4), (3, 5), (3, 6)\}{(3,4),(3,5),(3,6)}
{(1,4),(2,4),(3,4)}\{(1, 4), (2, 4), (3, 4)\}{(1,4),(2,4),(3,4)}
Correct Answer not found