A 55-year-old woman writes a formal complaint about a perceived delay in her cancer diagnosis. As her GP, what is the most appropriate first step in responding?AIgnore the complaint unless instructed by the practice managerBSend a brief letter stating that no errors occurredCAcknowledge the complaint promptly, explain the process and investigate in line with the complaints policyDDelete the complaint from the systemEContact the media to defend your practiceCheck my answer