With reference to the protection provided to arrested person under Article 22 of the Constitution and other criminal laws, consider the following statements:
1. A person has a right to be informed about the grounds of arrest.
2. A person must be produced before a magistrate within a period of 48 hours.
3. Confessions made in police custody cannot be used as evidence against the accused.
4. A boy under 15 years of age or a woman cannot be called to the police station just for questioning.
How many statements given above are correct?