Answer: A. The insurer may cancel it after the premium has been paid by the insured
Explanation: Immediately the premium has been paid, it will be impossible to cancel the Supplemental Extended Reporting Period Endorsement.
•Supplemental Extended Reporting Period is an added time after the expiration of the liability policy that permits policyholders to report a claim and get coverage, such claims will no longer be covered once the supplemental extended reporting period policy ends.