Which of the following statements about diagnosing the OceanStor 5300 V3 are correct? (Multiple Choice)

Which of the following statements about diagnosing the OceanStor 5300 V3 are correct? (Multiple Choice)
A . View particular alarms before general alarms.
B . View external errors before internal errors.
C . View advanced errors before low-level errors.
D . Replace faulty devices before viewing alarms or errors.

Answer: BC