All but one is false of Section 91 Criminal Procedure Code?

This section is not deemed to affect Sections 123 and 124 of the Indian Evidence Act, 1872 (1 of 1872)

This section is not deemed to apply to a letter, post card, telegram or other document or any parcel or thing in the custody of the postal or telegraph authority

This section is not deemed to affect Sections 123 and 124 of the Bankers' Book Evidence Act, 1891 (13 of 1891)