Under Article 22 of the Constitution of India, what is the maximum period for which a person can be detained under a preventive detention law without obtaining the opinion of an Advisory Board, as currently practiced?

Options:

• A: Two months, since the 44th Amendment Act of 1978 automatically replaced the original three-month limit.
• B: Four months, as determined by the Supreme Court in the Gopalan case.
• C: Six months, under the National Security Act guidelines.
• D: Three months, because the provision of the 44th Amendment Act reducing the period to two months has not yet been brought into force.

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