Which of the following assurances is not provided by compliance with Trust Services principles?

Which of the following assurances is not provided by compliance with Trust Services principles?
a. There are procedures to protect the system against unauthorized physical access.
b. The financial statements created by the system are free of material misstatements.
c. The documented system availability objectives, policies, and standards have been communicated to authorized users and controls are functioning as documented.
d. Documented system processing integrity objectives, policies, and standards have been communicated to authorized users and controls are functioning as documented.