What are the instructions during the APU fire test?

A、Continuous chime bell, MASTER WARN lights up, ECAM APU FIRE warns, and APU FIRE PUSH lights up on the roof.
B、Continuous chime bell, MASTER WARN light, ECAM APU FIRE warning, APU FIRE PUSH light on the top panel, white SQUIB light and amber DISCH light on the AGENT switch.
C、Continuous chime bell, MASTER WARN light, ECAM APU FIRE warning, APU FIRE PUSH light on the top panel, white SQUIB light and amber DISCH light on the AGENT switch, red APU FIRE light on the external power panel and external horn sound.