The correct option is C Companies Act, 2013
As per section 143 of CA 2013 auditor has following duties
∙ The auditor shall make a report to the members of the company on the accounts examined by him and on every financial statements which are required by or under this Act to be laid before the company in general meeting and the report shall after taking into account the provisions of this Act, the accounting and auditing standards and matters which are required to be included in the audit report under the provisions of this Act.
∙ The audit report should be prepared in accordance with section 143
∙ Where any of the matters required to be included in the audit report under this section is answered in the negative or with a qualification, the report shall state the reasons therefor
∙ If an auditor of a company, in the course of the performance of his duties as auditor, has reason to believe that an offence involving fraud is being or has been committed against the company by officers or employees of the company, he shall immediately report the matter to the Central Government.
∙ Every auditor shall comply with the auditing standards.