A listed issuer shall immediately inform the Exchange and publish an announcement in accordance with rule 2.07C containing the relevant details and reasons if the listed issuer fails to set up an audit committee or at any time has failed to meet any of the other requirements set out in rule 3.21 regarding the audit committee. Listed issuers shall set up an audit committee and/or appoint appropriate members to the audit committee to meet the requirement(s) within three months after failing to meet such requirement(s).