Which Argument's is/are strong as per given statement.

Statement-Should there be a complete ban on strike by government employees in India ?

Arguments-

I. Yes, this is the only way to teach discipline to the employees.
II. No, this deprives the citizens of their democratic rights.

1. if only argument I is strong
2. if only argument II is strong
3. if either I or II is strong
4. if both I & II are strong