(1) The chief executive shall, whenever required in writing to do so by the Public Accounts Committee, give evidence to that Committee in relation to -

(a) the regularity and propriety of the transactions recorded or required to be recorded in any book or other record of account that the Authority is required by this Act to prepare (being a book or record of account that is subject to audit by the Comptroller and Auditor General),

(b) the economy and efficiency of the Authority in the use of its resources,

(c) the systems, procedures and practices employed by the Authority for the purpose of evaluating the effectiveness of its operations, and

(d) any matter affecting the Authority referred to in a special report of the Comptroller and Auditor General under section 11(2) of the Comptroller and Auditor General (Amendment) Act 1993 or in any other report of the Comptroller and Auditor General (in so far as that other report relates to a matter specified in paragraph (a), (b) or (c)) that is laid before Dáil Éireann.

(2) In giving evidence under this section, the chief executive shall not question or express an opinion on the merits of -