The Constitution Allows Preventive Detention but Stipulates

The Constitution allows preventive detention but stipulates:

A) that no one should be detained beyond three months unless an Advisory Board authorises detention beyond that period
B) that the grounds for detention should be conveyed to the detenu before arresting him
C) that the detenu must be produced before the nearest magistrate within a period of 24 hours of his arrest
D) All of the above