Anti-Tampering and Anti-Implantation of Huawei Products Include: (Choose All That

Anti-tampering and anti-implantation of Huawei products include: (Choose all that apply.)

A) After the service, delete all daily maintenance accounts of the system.
B) Do not tamper with products.
C) Do not reserve private or undisclosed interfaces or accounts.
D) Do not implant malicious code, software, or backdoors in customer devices or systems.