If a chartered accountant is so closely related by blood or marriage to a sole practitioner, partner, or voting shareholder in a practice whose trust accounts the chartered accountant is auditing that, in the opinion of the relevant society, the audit of that practice’s trust accounts by the chartered accountant is undesirable,—
(a) the relevant society may notify the practice to that effect; and
(b) on notification, the chartered accountant is no longer qualified to audit any trust accounts of that practice.