Alibaba Cloud Monitor Service Stems from Years of Experience of Server

Alibaba Cloud Monitor service stems from years of experience of server monitoring technology in Alibaba group, leveraging the powerful data analysis capability of Alibaba cloud computing platform to provide monitoring service for various clients' applications and servers. A user receives an alert saying that the IOPS utilization rate for an ECS instance exceeds 80%. Yet, he/she is not sure how to handle the situation, the user may obtain help from Alibaba Cloud through the below methods ____________________? (Choose three.)

A) Check ECS or CloudMonitor product documents.
B) Open a ticket to Alibaba Cloud help desk.
C) Look for answers in Alibaba Cloud forum.
D) You cannot obtain any help from Alibaba Cloud.