Huawei Agile Cloud Authentication (HACA) supports only IMaster NCE-Campus as the HACA server.

According to the Huawei documents and resources, Huawei Agile Cloud Authentication (HACA) supports iMaster NCE-Campus as well as Agile Controller-Campus as the HACA server. HACA is an authentication method that allows users to access a network without entering user names or passwords3. Therefore, B is the correct answer. References: 3: https://support.huawei.com/enterprise/en/doc/EDOC1100086527