A statement followed by four arguments numbered I, II, III & IV. Choose which of the argument(s) is/are strong argument(s)?

Statement : Should the rule of wearing helmet for both driver and pillion rider while driving a motor cycle be enforced strictly?

Arguments : I - No, each individuals knowns how to protect his own life and it should be left to his discretion.

II - Yes, it is a rule and rules should be followed strictly by all.

III - Yes, it is necessity as the head is most sensitive/controlling organ, it should be protected by the helmet.

IV - No, it does not ensure safety of the head.