Explanation:

both (a) and (b) are correct

Article 22 deals with the protection against arrest and detention in certain cases. 

• This article is applicable to both citizens and non-citizens.
• This provision extends certain procedural safeguards for individuals in case of an arrest.
• It comes into the picture after a person has been arrested. It is not a fundamental right against detention and arrest.
• The idea behind this right is to prevent arbitrary arrests and detention.

The article provides the following safeguards:

• Article 22(1) – Any person who is in custody has to be informed as to why he has been arrested. Further, he cannot be denied the right to consult an advocate.
• Article 22(2) – The arrested individual should be produced before a judicial magistrate within 24 hours of his arrest.
• Article 22(3) – No individual who has been arrested can be kept in custody for more than the period determined by the judicial magistrate.

These safeguards are, however, not applicable to 

• Enemy aliens
• People arrested under preventive detention laws

Note: Punitive detention is detention after a trial. Preventive detention is detention without trial. The idea behind this is to prevent an individual from committing a crime. This means that persons can be detained on grounds of suspicion. The rights of people arrested in this manner are governed by preventive detention laws.

Hence option 3rd is correct.