[Q15] Consecutive ones property: solving components

Given the twin classes path:

Which of the following sets would violate the consecutive ones property if considered?

1. {4, 5, 7, 8}
2. {2, 7}
3. {1, 3, 6, 7}
4. {1, 2, 6}
5. None of the above.

Original idea by: Juan Felipe Hernández Albarracín.