Which of the following is not a matter that is typically included in the letter of representation obtained from an audit client?

Which of the following is not a matter that is typically included in the letter of representation obtained from an audit client?

a. Availability of all financial records and related data.
b. Absence of unrecorded transactions.
c. Compliance with aspects of contractual agreements that may affect the financial statements.
d. Assessment of management’s efficiency of decision making.