Option which was required to be given to the accused, as per Section 50 of the NDPS Act, was that he has a right to be searched in the presence of a Magistrate or a Gazetted Officer – The Option which was given to him was that whether the accused opted to be searched before a Gazetted Officer or a Civil Gazetted Officer or before him – Word „Magistrate‟ was missing from the notice – Mandatory provisions of S. 50 of the NDPS Act not complied – No conviction can be based on such a defective option.