Answer is A is correct. The Court shall presume the genuineness of every electronic record purporting to be the Official Gazette, or purporting to be electronic record directed by any law to be kept by any person, if such electronic record is kept substantially in the form required by law and is produced from proper custody. Therefore option (a) is the correct answer.

Answer is D is correct. The Court shall presume that every document purporting to be a power-of- attorney, and to have been executed before, and authenticated by, a Notary Public, or any Court, Judge, Magistrate, Indian Consul or Vice-Consul, or representative of the Central Government, was so executed and authenticated. Therefore option (d) is the correct answer.

Answer is C is correct. As per Section 90 where any document, purporting or proved to be thirty years old, is produced from any custody which the Court in the particular case considers proper, the Court may presume that the signature and every other part of such document, which purports to be in the handwriting of any particular person, is in that person’s handwriting, and, in the case of a document executed or attested, that it was duly executed and attested by the persons by whom it purports to be executed and attested. Therefore option (c) is the correct answer.

Answer is D is correct. As per Proviso of Section 162(1) the statement made by witness to investigating officer if duly proved, can be used by the accused. Therefore option (d) is the correct answer.

Answer is A is correct. As per Section 164(1) of CrPC the confession is valid as any Judicial Magistrate may record the confession made by him, whether he has jurisdiction in the case or not. Therefore option (a) is the correct answer.