Explanation:

All the statements are correct.

Section 8 of the Right to Information Act provides for exemption from disclosure of information. Some of the grounds for exemption are:

• information including commercial confidence, trade secrets or intellectual property, the disclosure of which would harm the competitive position of a third party, unless the competent authority is satisfied that larger public interest warrants the disclosure of such information
• information received in confidence from foreign Government
• information which relates to personal information the disclosure of which has no relationship to any public activity or interest, or which would cause unwarranted invasion of the privacy of the individual unless the Central Public Information Officer or the State Public Information Officer or the appellate authority, as the case may be, is satisfied that the larger public interest justifies the disclosure of such information.

Hence option 4th is correct.